The guitar is a
stringed musical instrument
In musical instrument classification, string instruments, or chordophones, are musical instruments that produce sound from vibrating strings when a performer strums, plucks, strikes or sounds the strings in varying manners.
Musicians play so ...
that is usually fretted (with
some exceptions) and typically has six or
twelve strings. It is usually held flat against the player's body and played by
strumming or
plucking the strings with the dominant hand, while simultaneously pressing selected strings against
frets
A fret is any of the thin strips of material, usually metal wire, inserted laterally at specific positions along the Neck (music), neck or Fingerboard, fretboard of a stringed instrument. Frets usually extend across the full width of the Neck ( ...
with the fingers of the opposite hand. A
guitar pick
A guitar pick (American English) is a plectrum used for guitars. Picks are generally made of one uniform material, such as some kind of plastic (nylon, Delrin, celluloid), rubber, felt, Tortoiseshell material, tortoiseshell, wood, metal, glass, ...
may also be used to strike the strings. The sound of the guitar is projected either
acoustically, by means of a resonant hollow chamber on the guitar, or
amplified by an electronic
pickup and an
amplifier
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power su ...
.
The guitar is classified as a
chordophone
In musical instrument classification, string instruments, or chordophones, are musical instruments that produce sound from vibrating strings when a performer strums, plucks, strikes or sounds the strings in varying manners.
Musicians play some ...
, meaning the sound is produced by a vibrating string stretched between two fixed points. Historically, a guitar was constructed from wood, with its strings made of
catgut
Catgut (also known as gut) is a type of cord that is prepared from the natural fiber found in the walls of animal intestines. Catgut makers usually use sheep or goat intestines, but occasionally use the intestines of cattle, hogs, horses, mules, ...
. Steel guitar strings were introduced near the end of the nineteenth century in the United States,
but nylon and steel strings became mainstream only following
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
.
The guitar's ancestors include the
gittern
The gittern was a relatively small gut-strung, round-backed instrument that first appeared in literature and pictorial representation during the 13th century in Western Europe (Iberian Peninsula, Italy, France, England). It is usually depicted p ...
, the
vihuela
The vihuela () is a 15th-century fretted plucked Spanish string instrument, shaped like a guitar (figure-of-eight form offering strength and portability) but tuned like a lute. It was used in 15th- and 16th-century Spain as the equivalent of t ...
, the four-
course Renaissance guitar
The evolution of classical guitars began with the influences of the gittern and vihuela in the 16th century and ended with the modern classical guitar in the mid-19th century.
Precursors to the classic guitar
Renaissance stringed instruments
...
, and the five-course
baroque guitar
The Baroque guitar (–1750) is a string instrument with five Course (music), courses of gut strings and moveable gut frets. The first (highest pitched) course sometimes used only a single string.
History
The Baroque guitar replaced the lute as ...
, all of which contributed to the development of the modern six-string instrument.
There are three main types of modern guitar: the
classical guitar
The classical guitar, also known as Spanish guitar, is a member of the guitar family used in classical music and other styles. An acoustic wooden string (music), string instrument with strings made of catgut, gut or nylon, it is a precursor of the ...
(Spanish guitar); the
steel-string acoustic guitar
The steel-string acoustic guitar is a modern form of guitar that descends from the gut-strung Romantic guitar, but is strung with steel strings for a brighter, louder sound. Like the modern classical guitar, it is often referred to simply ...
or
electric guitar
An electric guitar is a guitar that requires external electric Guitar amplifier, sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickup (music technology), pickups ...
; and the
Hawaiian guitar (played across the player's lap). Traditional acoustic guitars include the
flat top guitar
A flat top guitar is a type of guitar body model which has a flat top (as opposed to archtop). The term "flat top" is usually used to refer to the most popular type of steel-string acoustic guitars; however, electric guitars such as the solid-b ...
(typically with a large sound hole) or the
archtop guitar
An archtop guitar is a hollow acoustic guitar, acoustic or semi-acoustic guitar, semi-acoustic guitar with a full body and a distinctive arched top, whose sound is particularly popular with jazz guitar, jazz, blues, and rockabilly players.
Typic ...
, which is sometimes called a "
jazz guitar
Jazz guitar may refer to either a type of electric guitar or a guitar playing style in jazz, using Guitar amplifier, electric amplification to increase the volume of acoustic guitars.
In the early 1930s, jazz musicians sought to amplify their ...
". The tone of an acoustic guitar is produced by the strings' vibration, amplified by the hollow body of the guitar, which acts as a
resonating chamber. The classical
Spanish guitar is often played as a
solo
Solo or SOLO may refer to:
Arts and entertainment Characters
* Han Solo, a ''Star Wars'' character
* Jacen Solo, a Jedi in the non-canonical ''Star Wars Legends'' continuity
* Kylo Ren (Ben Solo), a ''Star Wars'' character
* Napoleon Solo, fr ...
instrument using a comprehensive
fingerstyle
Fingerstyle guitar is the technique of playing the guitar or bass guitar by plucking the strings directly with the fingertips, fingernails, or picks attached to fingers, as opposed to flatpicking (plucking individual notes with a single plect ...
technique where each string is plucked individually by the player's fingers, as opposed to being strummed. The term "finger-picking" can also refer to a specific tradition of folk, blues, bluegrass, and country guitar playing in the United States.
Electric guitar
An electric guitar is a guitar that requires external electric Guitar amplifier, sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickup (music technology), pickups ...
s, first patented in 1937,
use a
pickup and
amplifier
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power su ...
that made the instrument loud enough to be heard, but also enabled manufacturing guitars with a solid block of wood, without needing a resonant chamber.
A wide array of electronic
effects unit
An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.
Common effects include distortion (music), distortion/overdrive, ...
s became possible including
reverb
In acoustics, reverberation (commonly shortened to reverb) is a persistence of sound after it is produced. It is often created when a sound is reflected on surfaces, causing multiple reflections that build up and then decay as the sound is a ...
and
distortion (or "overdrive").
Solid-body guitars began to dominate the guitar market during the 1960s and 1970s; they are less prone to unwanted
acoustic feedback
Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation that may occur when an acoustic path exists between an audio output (for example, a loudspeaker) and its audio input (for example, a microphon ...
. As with acoustic guitars, there are a number of types of electric guitars, including
hollowbody guitars,
archtop guitar
An archtop guitar is a hollow acoustic guitar, acoustic or semi-acoustic guitar, semi-acoustic guitar with a full body and a distinctive arched top, whose sound is particularly popular with jazz guitar, jazz, blues, and rockabilly players.
Typic ...
s (used in
jazz guitar
Jazz guitar may refer to either a type of electric guitar or a guitar playing style in jazz, using Guitar amplifier, electric amplification to increase the volume of acoustic guitars.
In the early 1930s, jazz musicians sought to amplify their ...
,
blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
and
rockabilly
Rockabilly is one of the earliest styles of rock and roll music. It dates back to the early 1950s in the United States, especially the Southern United States, South. As a genre, it blends the sound of Western music (North America), Western musi ...
) and
solid-body guitars, which are widely used in
rock music
Rock is a Music genre, genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and the United Kingdo ...
.
The loud, amplified sound and sonic power of the electric guitar played through a guitar amp have played a key role in the development of
blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
and
rock music
Rock is a Music genre, genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and the United Kingdo ...
, both as an
accompaniment
Accompaniment is the musical part which provides the rhythmic and/or harmonic support for the melody or main themes of a song or instrumental piece. There are many different styles and types of accompaniment in different genres and styles of m ...
instrument (playing
riff
A riff is a short, repeated motif or figure in the melody or accompaniment of a musical composition. Riffs are most often found in rock music, punk, heavy metal music, Latin, funk, and jazz, although classical music is also sometimes based ...
s and
chords) and performing
guitar solo
A guitar solo is a melody, melodic passage, instrumental section (music), section, or entire piece of music, pre-written (or improvised) to be played on a classical guitar, classical, electric guitar, electric, or acoustic guitar. In 20th and ...
s, and in many rock subgenres, notably
heavy metal music
Heavy metal (or simply metal) is a Music genre, genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and United States. With roots in blues rock, psychedelic rock and acid rock, heavy metal band ...
and
punk rock
Punk rock (also known as simply punk) is a rock music genre that emerged in the mid-1970s. Rooted in 1950s rock and roll and 1960s garage rock, punk bands rejected the corporate nature of mainstream 1970s rock music. They typically produced sh ...
. The electric guitar has had a major influence on
popular culture
Popular culture (also called pop culture or mass culture) is generally recognized by members of a society as a set of cultural practice, practices, beliefs, artistic output (also known as popular art f. pop art
F is the sixth letter of the Latin alphabet.
F may also refer to:
Science and technology Mathematics
* F or f, the number 15 (number), 15 in hexadecimal and higher positional systems
* ''p'F'q'', the hypergeometric function
* F-distributi ...
or mass art, sometimes contraste ...
. The guitar is used in a wide variety of musical genres worldwide. It is recognized as a primary instrument in genres such as
blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
,
bluegrass,
country
A country is a distinct part of the world, such as a state, nation, or other political entity. When referring to a specific polity, the term "country" may refer to a sovereign state, state with limited recognition, constituent country, ...
,
flamenco
Flamenco () is an art form based on the various folkloric music traditions of southern Spain, developed within the Gitanos, gitano subculture of the region of Andalusia, and also having historical presence in Extremadura and Region of Murcia, ...
,
folk
Folk or Folks may refer to:
Sociology
*Nation
*People
* Folklore
** Folk art
** Folk dance
** Folk hero
** Folk horror
** Folk music
*** Folk metal
*** Folk punk
*** Folk rock
** Folk religion
* Folk taxonomy
Arts, entertainment, and media
* Fo ...
,
jazz
Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana, in the late 19th and early 20th centuries. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
,
jota
Jota may refer to:
__NOTOC__
* Iota (Ι, ι), the name of the 9th letter in the Greek alphabet;
* (figuratively) ''Something very small'', based on the fact that the letter Iota (lat. i) is the smallest character in the alphabet;
* The name of the ...
,
ska
Ska (; , ) is a music genre that originated in Jamaica in the late 1950s and was the precursor to rocksteady and reggae. It combined elements of Caribbean mento and calypso with American jazz and rhythm and blues. Ska is characterized by a w ...
,
mariachi
Mariachi (, , ) is a genre of regional Mexican music dating back to at least the 18th century, evolving over time in the countryside of various regions of western Mexico. The usual mariachi group today consists of as many as eight violins, two ...
,
metal
A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...
,
punk
Punk or punks may refer to:
Genres, subculture, and related aspects
* Punk rock, a music genre originating in the 1970s associated with various subgenres
* Punk subculture, a subculture associated with punk rock, or aspects of the subculture s ...
,
funk
Funk is a music genre that originated in African-American communities in the mid-1960s when musicians created a rhythmic, danceable new form of music through a mixture of various music genres that were popular among African-Americans in the ...
,
reggae
Reggae () is a music genre that originated in Jamaica during the late 1960s. The term also denotes the modern popular music of Jamaica and its Jamaican diaspora, diaspora. A 1968 single by Toots and the Maytals, "Do the Reggay", was the first ...
,
rock
Rock most often refers to:
* Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids
* Rock music, a genre of popular music
Rock or Rocks may also refer to:
Places United Kingdom
* Rock, Caerphilly, a location in Wale ...
,
grunge
Grunge (sometimes referred to as the Seattle sound) is an alternative rock Music genre, genre and subculture that emerged during the in the U.S. state of Washington (state), Washington, particularly in Seattle and Music of Olympia, Washington, O ...
,
soul
The soul is the purported Mind–body dualism, immaterial aspect or essence of a Outline of life forms, living being. It is typically believed to be Immortality, immortal and to exist apart from the material world. The three main theories that ...
,
acoustic music
Acoustic music is music that solely or primarily uses instruments that produce sound through acoustic means, as opposed to electric or electronic means. While all music was once acoustic, the retronym "acoustic music" appeared after the a ...
,
disco
Disco is a music genre, genre of dance music and a subculture that emerged in the late 1960s from the United States' urban nightclub, nightlife, particularly in African Americans, African-American, Italian-Americans, Italian-American, LGBTQ ...
,
new wave,
new age
New Age is a range of Spirituality, spiritual or Religion, religious practices and beliefs that rapidly grew in Western world, Western society during the early 1970s. Its highly eclecticism, eclectic and unsystematic structure makes a precise d ...
,
adult contemporary music
Adult contemporary music (AC) is a form of radio-played popular music, ranging from 1960s vocal and 1970s soft rock music to predominantly ballad-heavy music of the 1980s to the present day, with varying degrees of easy listening, pop, sou ...
, and
pop, occasionally used as a sample in
hip-hop
Hip-hop or hip hop (originally disco rap) is a popular music genre that emerged in the early 1970s from the African-American community of New York City. The style is characterized by its synthesis of a wide range of musical techniques. Hi ...
,
dubstep
Dubstep is a genre of electronic dance music that originated in South London in the early 2000s. The style emerged as a UK garage offshoot that blended 2-step rhythms and sparse dub production, as well as incorporating elements of broken ...
, or
trap music
Trap music, also known simply as trap, is a subgenre of hip-hop music which originated in the Southern United States, with lyrical references to trap starting in 1991 but the modern sound of trap appearing in 1999. The genre gets its name from t ...
.
History
The modern word ''guitar'' and its antecedents have been applied to a wide variety of chordophones since classical times, sometimes causing confusion. The English word ''guitar'', the German ', and the French ' were all adopted from the Spanish ', which comes from the
Andalusian Arabic
Andalusi Arabic or Andalusian Arabic () was a variety or varieties of Arabic spoken mainly from the 8th to the 15th century in Al-Andalus, the regions of the Iberian Peninsula under the Muslim rule.
Arabic spread gradually over the centuries ...
(') and the Latin ', which in turn came from the
Ancient Greek
Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...
which is of uncertain ultimate origin. ''
Kithara
The kithara (), Latinized as cithara, was an ancient Greek musical instrument in the yoke lutes family. It was a seven-stringed professional version of the lyre, which was regarded as a rustic, or folk instrument, appropriate for teaching mu ...
'' appears in the Bible four times (1 Cor. 14:7, Rev. 5:8, 14:2, and 15:2), and is usually translated into English as ''harp''.
The origins of the modern guitar are not known. Before the development of the
electric guitar
An electric guitar is a guitar that requires external electric Guitar amplifier, sound amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar. It uses one or more pickup (music technology), pickups ...
and the use of synthetic materials, a guitar was defined as being an instrument having "a long, fretted neck, flat wooden
soundboard, ribs, and a flat back, most often with incurved sides." The term is used to refer to a number of
chordophone
In musical instrument classification, string instruments, or chordophones, are musical instruments that produce sound from vibrating strings when a performer strums, plucks, strikes or sounds the strings in varying manners.
Musicians play some ...
s that were developed and used across Europe, beginning in the 12th century and, later, in the Americas. A 3,300-year-old stone carving of a
Hittite bard playing a stringed instrument is the oldest iconographic representation of a chordophone, and clay plaques from
Babylonia
Babylonia (; , ) was an Ancient history, ancient Akkadian language, Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Kuwait, Syria and Iran). It emerged as a ...
show people playing a lute-like instrument which is similar to the guitar.
Several scholars cite varying influences as antecedents to the modern guitar. Although the development of the earliest "guitar" is lost to the history of medieval Spain, two instruments are commonly claimed as influential predecessors: the four-string
oud and its precursor, the European
lute
A lute ( or ) is any plucked string instrument with a neck (music), neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lu ...
; the former was brought to Iberia by the
Moors
The term Moor is an Endonym and exonym, exonym used in European languages to designate the Muslims, Muslim populations of North Africa (the Maghreb) and the Iberian Peninsula (particularly al-Andalus) during the Middle Ages.
Moors are not a s ...
in the 8th century. It has often been assumed that the guitar is a development of the lute, or of the ancient Greek kithara. However, many scholars consider the lute an offshoot or separate line of development which did not influence the evolution of the guitar in any significant way.
At least two instruments called "guitars" were in use in Spain by 1200: the ' (Latin guitar) and the so-called ' (Moorish guitar). The guitarra morisca had a rounded back, a wide
fingerboard
The fingerboard (also known as a fretboard on fretted instruments) is an important component of most stringed instruments. It is a thin, long strip of material, usually wood, that is laminated to the front of the neck of an instrument. The stri ...
, and several sound holes. The guitarra Latina had a single sound hole and a narrower neck. By the 14th century the qualifiers "moresca" or "morisca" and "latina" had been dropped, and these two chordophones were simply referred to as guitars.
The Spanish
vihuela
The vihuela () is a 15th-century fretted plucked Spanish string instrument, shaped like a guitar (figure-of-eight form offering strength and portability) but tuned like a lute. It was used in 15th- and 16th-century Spain as the equivalent of t ...
, called in Italian the , a guitar-like instrument of the 15th and 16th centuries, is widely considered to have been the single most important influence in the development of the baroque guitar. It had six
courses (usually), lute-like
tuning in fourths and a guitar-like body, although early representations reveal an instrument with a sharply cut waist. It was also larger than the contemporary four-course guitars. By the 16th century, the vihuela's construction had more in common with the modern guitar, with its curved one-piece ribs, than with the viols, and more like a larger version of the contemporary four-course guitars. The vihuela enjoyed only a relatively short period of popularity in Spain and Italy during an era dominated elsewhere in Europe by the
lute
A lute ( or ) is any plucked string instrument with a neck (music), neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lu ...
; the last surviving published music for the instrument appeared in 1576.
Meanwhile, the five-course
baroque guitar
The Baroque guitar (–1750) is a string instrument with five Course (music), courses of gut strings and moveable gut frets. The first (highest pitched) course sometimes used only a single string.
History
The Baroque guitar replaced the lute as ...
, which was documented in Spain from the middle of the 16th century, enjoyed popularity, especially in Spain, Italy and France from the late 16th century to the mid-18th century.
["The first incontrovertible evidence of five-course instruments can be found in Miguel Fuenllana's ''Orphenica Lyre'' of 1554, which contains music for a ''vihuela de cinco ordenes''. In the following year, Juan Bermudo wrote in his ''Declaracion de Instrumentos Musicales'': 'We have seen a guitar in Spain with five courses of strings.' Bermudo later mentions in the same book that 'Guitars usually have four strings,' which implies that the five-course guitar was of comparatively recent origin, and still something of an oddity." Tom and Mary Anne Evans, ''Guitars: From the Renaissance to Rock''. Paddington Press Ltd, 1977, p. 24.]["We know from literary sources that the five course guitar was immensely popular in Spain in the early seventeenth century and was also widely played in France and Italy...Yet almost all the surviving guitars were built in Italy...This apparent disparity between the documentary and instrumental evidence can be explained by the fact that, in general, only the more expensively made guitars have been kept as collectors' pieces. During the early seventeenth century the guitar was an instrument of the people of Spain, but was widely played by the Italian aristocracy." Tom and Mary Anne Evans. ''Guitars: From the Renaissance to Rock''. Paddington Press Ltd, 1977, p. 24.] In Portugal, the word ''viola'' referred to the guitar, as ''guitarra'' meant the "
Portuguese guitar", a variety of
cittern
The cittern or cithren ( Fr. ''cistre'', It. ''cetra'', Ger. ''Cister,'' Sp. ''cistro, cedra, cítola'') is a stringed instrument dating from the Renaissance. Modern scholars debate its exact history, but it is generally accepted that it is d ...
.
There were many different plucked instruments that were being invented and used in Europe during the Middle Ages. By the 16th century, most of the forms of guitar had fallen off, to never be seen again. However, midway through the 16th century, the five-course guitar was established. It was not a straightforward process. There were two types of five-course guitars, differing in the location of the major third and in the interval pattern. The fifth course can be inferred because the instrument was known to play more than the sixteen notes possible with four. The guitar's strings were tuned in unison, so, in other words, it was tuned by placing a finger on the second fret of the thinnest string and tuning the guitar bottom to top. The strings were a whole octave apart from one another, which is the reason for the different method of tuning. Because it was so different, there was major controversy as to who created the five course guitar. A literary source, Lope de Vega's Dorotea, gives the credit to the poet and musician
Vicente Espinel
Vicente Gómez Martínez-Espinel (; 28 December 15504 February 1624) was a Spanish writer and musician of the Siglo de Oro. He is credited with the creation of the modern poetic form of the '' décima'', composed of ten octameters, named '' es ...
. This claim was also repeated by Nicolas Doizi de Velasco in 1640, however this claim has been contested by others who state that Espinel's birth year (1550) make it impossible for him to be responsible for the tradition. He believed that the tuning was the reason the instrument became known as the Spanish guitar in Italy. Even later, in the same century,
Gaspar Sanz
Francisco Bartolomé Sanz Celma (April 4, 1640 ( baptized) – 1710), better known as Gaspar Sanz, was a Spanish composer, guitarist, and priest born to a wealthy family in Calanda in the comarca of Bajo Aragón, Spain. He studied music, theo ...
wrote that other nations such as Italy or France added to the Spanish guitar. All of these nations even imitated the five-course guitar by "recreating" their own.

Finally, , the form and structure of the modern guitar were developed by different Spanish makers such as
Manuel de Soto y Solares and, perhaps the most important of all guitar makers,
Antonio Torres Jurado
Antonio de Torres Jurado (13 June 1817 – 19 November 1892) was a Spanish guitarist and luthier, and "the most important Spanish guitar maker of the 19th century."
It is with his designs that the first recognizably modern classical guitars are ...
, who increased the size of the guitar body, altered its proportions, and invented the breakthrough fan-braced pattern. Bracing, the internal pattern of wood reinforcements used to secure the guitar's top and back and prevent the instrument from collapsing under tension, is an important factor in how the guitar sounds. Torres' design greatly improved the volume, tone, and projection of the instrument, and it has remained essentially unchanged since.
Types
Guitars are often divided into two broad categories:
acoustic and
electric guitars
Electric Guitars were an English band formed early in 1980 by Neil Davenport (vocals, lyrics) and Richard Hall (bass, vocals) who were both studying English at Bristol University. The band soon increased to a five-man line-up, with Andy Sander ...
. Within each category, there are further sub-categories that are nearly endless in quantity and are always evolving. For example, an electric guitar can be purchased in a six-string model (the most common model) or in
seven- or
twelve-string formats. An instruments overall design, internal construction and components, wood type or species, hardware and electronic appointments all add to the abundant nature of sub-categories and its unique tonal & functional property.
Acoustic
Acoustic guitars form several notable subcategories within the acoustic guitar group: classical and
flamenco guitar
A flamenco guitar is a guitar similar to a classical guitar, but with lower action, thinner tops and less internal bracing. It usually has nylon strings, like the classical guitar, but it generally possesses a livelier, grittier sound compared ...
s; steel-string guitars, which include the flat-topped, or "folk", guitar;
twelve-string guitar
A twelve-string guitar (or 12-string guitar) is a steel-string guitar with 12 string (music), strings in six Course (music), courses, which produces a thicker, more ringing tone than a standard six-string guitar. Typically, the strings of the lo ...
s; and the arched-top guitar. The acoustic guitar group also includes unamplified guitars designed to play in different registers, such as the acoustic bass guitar, which has a similar tuning to that of the electric bass guitar.
Renaissance and Baroque
Renaissance and Baroque guitars are the ancestors of the modern
classical and
flamenco guitar
A flamenco guitar is a guitar similar to a classical guitar, but with lower action, thinner tops and less internal bracing. It usually has nylon strings, like the classical guitar, but it generally possesses a livelier, grittier sound compared ...
. They are substantially smaller, more delicate in construction, and generate less volume. The strings are paired in courses as in a modern
12-string guitar
A twelve-string guitar (or 12-string guitar) is a steel-string guitar with 12 strings in six courses, which produces a thicker, more ringing tone than a standard six-string guitar. Typically, the strings of the lower four courses are tuned in ...
, but they only have four or five courses of strings rather than six single strings normally used now. They were more often used as rhythm instruments in ensembles than as solo instruments, and can often be seen in that role in
early music
Early music generally comprises Medieval music (500–1400) and Renaissance music (1400–1600), but can also include Baroque music (1600–1750) or Ancient music (before 500 AD). Originating in Europe, early music is a broad Dates of classical ...
performances. (
Gaspar Sanz
Francisco Bartolomé Sanz Celma (April 4, 1640 ( baptized) – 1710), better known as Gaspar Sanz, was a Spanish composer, guitarist, and priest born to a wealthy family in Calanda in the comarca of Bajo Aragón, Spain. He studied music, theo ...
's ''Instrucción de Música sobre la Guitarra Española'' of 1674 contains his whole output for the solo guitar.)
Renaissance
The Renaissance ( , ) is a Periodization, period of history and a European cultural movement covering the 15th and 16th centuries. It marked the transition from the Middle Ages to modernity and was characterized by an effort to revive and sur ...
and
Baroque
The Baroque ( , , ) is a Western Style (visual arts), style of Baroque architecture, architecture, Baroque music, music, Baroque dance, dance, Baroque painting, painting, Baroque sculpture, sculpture, poetry, and other arts that flourished from ...
guitars are easily distinguished, because the Renaissance guitar is very plain and the Baroque guitar is very ornate, with ivory or wood inlays all over the neck and body, and a paper-cutout inverted "wedding cake" inside the hole.
Classical
Classical guitars, also known as "Spanish" guitars,
are typically strung with nylon strings, plucked with the fingers, played in a seated position and are used to play a diversity of musical styles including
classical music
Classical music generally refers to the art music of the Western world, considered to be #Relationship to other music traditions, distinct from Western folk music or popular music traditions. It is sometimes distinguished as Western classical mu ...
. The classical guitar's wide, flat neck allows the musician to play scales, arpeggios, and certain chord forms more easily and with less adjacent string interference than on other styles of guitar.
Flamenco guitar
A flamenco guitar is a guitar similar to a classical guitar, but with lower action, thinner tops and less internal bracing. It usually has nylon strings, like the classical guitar, but it generally possesses a livelier, grittier sound compared ...
s are very similar in construction, but they are associated with a more percussive tone. In Portugal, the same instrument is often used with steel strings particularly in its role within
fado
Fado (; "destiny, fate") is a music genre which can be traced to the 1820s in Lisbon, Portugal, but probably has much earlier origins. Fado historian and scholar Rui Vieira Nery states that "the only reliable information on the history of fado ...
music. The guitar is called
viola
The viola ( , () ) is a string instrument of the violin family, and is usually bowed when played. Violas are slightly larger than violins, and have a lower and deeper sound. Since the 18th century, it has been the middle or alto voice of the ...
, or
violão in Brazil, where it is often used with an extra seventh string by
choro
''Choro'' (, "cry" or "lament"), also popularly called ''chorinho'' ("little cry" or "little lament"), is an instrumental Brazilian popular music genre which originated in 19th century Rio de Janeiro. Despite its name, the music often has a fa ...
musicians to provide extra bass support.
In Mexico, the popular
mariachi
Mariachi (, , ) is a genre of regional Mexican music dating back to at least the 18th century, evolving over time in the countryside of various regions of western Mexico. The usual mariachi group today consists of as many as eight violins, two ...
band includes a range of guitars, from the small ''
requinto
The term requinto is used in both Spanish and Portuguese to mean a smaller, higher-pitched version of another instrument. Thus, there are ''requinto'' guitars, drums, and several wind instruments.
Wind instruments
''Requinto'' was 19th-century ...
'' to the ''
guitarrón'', a guitar larger than a
cello
The violoncello ( , ), commonly abbreviated as cello ( ), is a middle pitched bowed (sometimes pizzicato, plucked and occasionally col legno, hit) string instrument of the violin family. Its four strings are usually intonation (music), tuned i ...
, which is tuned in the bass register. In Colombia, the traditional quartet includes a range of instruments too, from the small ''
bandola'' (sometimes known as the Deleuze-Guattari, for use when traveling or in confined rooms or spaces), to the slightly larger
tiple
A tiple (, literally treble or soprano), is a particular type of guitar, typically with 10 or 12 strings but sometimes fewer, and is built in several distinct regional styles. A tiple player is called a ''tiplista''. The first written mention of ...
, to the full-sized classical guitar. The requinto also appears in other Latin-American countries as a complementary member of the guitar family, with its smaller size and scale, permitting more projection for the playing of single-lined melodies. Modern dimensions of the classical instrument were established by the Spaniard
Antonio de Torres Jurado (1817–1892).
Flat-top
Flat-top guitars with steel strings are similar to the
classical guitar
The classical guitar, also known as Spanish guitar, is a member of the guitar family used in classical music and other styles. An acoustic wooden string (music), string instrument with strings made of catgut, gut or nylon, it is a precursor of the ...
, however, the flat-top body size is usually significantly larger than a classical guitar, and has a narrower, reinforced neck and stronger structural design. The robust X-bracing typical of flat-top guitars was developed in the 1840s by German-American luthiers, of whom
Christian Friedrich "C. F." Martin is the best known. Originally used on gut-strung instruments, the strength of the system allowed the later guitars to withstand the additional tension of steel strings. Steel strings produce a brighter tone and a louder sound. The acoustic guitar is used in many kinds of music including folk, country, bluegrass, pop, jazz, and blues. Many variations are possible from the roughly classical-sized
OO and
Parlour
A parlour (or parlor) is a reception room or public space. In medieval Christian Europe, the "outer parlour" was the room where the monks or nuns conducted business with those outside the monastery and the "inner parlour" was used for necessar ...
to the large
Dreadnought
The dreadnought was the predominant type of battleship in the early 20th century. The first of the kind, the Royal Navy's , had such an effect when launched in 1906 that similar battleships built after her were referred to as "dreadnoughts", ...
(the most commonly available type) and
Jumbo
Jumbo (December 25, 1860 – September 15, 1885), also known as Jumbo the Elephant and Jumbo the Circus Elephant, was a 19th-century male African bush elephant born in Sudan. Jumbo was exported to Jardin des Plantes, a zoo in Paris, and then tr ...
.
Ovation
The ovation ( from ''ovare'': to rejoice) was a lesser form of the Roman triumph. Ovations were granted when war was not declared between enemies on the level of nations or states; when an enemy was considered basely inferior (e.g., slaves, pira ...
makes a modern variation, with a rounded back/side assembly molded from artificial materials.
Archtop
Archtop guitars are steel-string instruments in which the top (and often the back) of the instrument are carved from a solid billet, into a curved, rather than flat, shape. This violin-like construction is usually credited to the American
Orville Gibson
Orville H. Gibson (May 8, 1856 – August 19, 1918) was an American luthier who founded the Gibson (guitar company), Gibson Guitar Company in Kalamazoo, Michigan in 1902, makers of guitars, mandolins and other instruments.
His earliest known ins ...
.
Lloyd Loar
Lloyd Allayre Loar (1886–1943) was an American musician, instrument designer and sound engineer. He is best known for his design work with the Gibson Mandolin-Guitar Mfg. Co. Ltd. in the early 20th century, including the F-5 model mandolin and ...
of the
Gibson Mandolin-Guitar Mfg. Co introduced the violin-inspired F-shaped hole design now usually associated with archtop guitars, after designing a style of
mandolin
A mandolin (, ; literally "small mandola") is a Chordophone, stringed musical instrument in the lute family and is generally Plucked string instrument, plucked with a plectrum, pick. It most commonly has four Course (music), courses of doubled St ...
of the same type. The typical archtop guitar has a large, deep, hollow body whose form is much like that of a mandolin or a violin-family instrument. Nowadays, most archtops are equipped with magnetic pickups, and they are therefore both acoustic and electric. F-hole archtop guitars were immediately adopted, upon their release, by both
jazz
Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana, in the late 19th and early 20th centuries. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
and
country
A country is a distinct part of the world, such as a state, nation, or other political entity. When referring to a specific polity, the term "country" may refer to a sovereign state, state with limited recognition, constituent country, ...
musicians, and have remained particularly popular in jazz music, usually with
flatwound strings.
Resonator, resophonic or Dobros

All three principal types of resonator guitars were invented by the Slovak-American
John Dopyera
John Dopyera ( Slovak: ''Ján Dopjera''; 1893–1988) was a Slovak- American inventor, entrepreneur, and maker of stringed instruments. His inventions included the resonator guitar and important contributions to the early development of the el ...
(1893–1988) for the National and Dobro (Dopyera Brothers) companies. Similar to the flat top guitar in appearance, but with a body that may be made of brass, nickel-silver, or steel as well as wood, the sound of the resonator guitar is produced by one or more aluminum resonator cones mounted in the middle of the top. The physical principle of the guitar is therefore similar to the
loudspeaker
A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an ...
.
The original purpose of the resonator was to produce a very loud sound; this purpose has been largely superseded by
electrical amplification, but the resonator guitar is still played because of its distinctive tone. Resonator guitars may have either one or three resonator cones. The method of transmitting sound resonance to the cone is either a "biscuit" bridge, made of a small piece of hardwood at the vertex of the cone (Nationals), or a "spider" bridge, made of metal and mounted around the rim of the (inverted) cone (Dobros). Three-cone resonators always use a specialized metal bridge. The type of resonator guitar with a neck with a square cross-section—called "square neck" or "Hawaiian"—is usually played face up, on the lap of the seated player, and often with a metal or glass
slide
Slide or Slides may refer to:
Places
* Slide, California, former name of Fortuna, California
Arts, entertainment, and media Music Albums
* ''Slide'' (Lisa Germano album), 1998
* ''Slide'' (George Clanton album), 2018
*''Slide'', by Patrick Glee ...
. The round neck resonator guitars are normally played in the same fashion as other guitars, although slides are also often used, especially in blues.
Steel
A
steel guitar
A steel guitar () is any guitar played while moving a steel bar or similar hard object against plucked strings. The bar itself is called a "steel" and is the source of the name "steel guitar". The instrument differs from a conventional guitar i ...
is any guitar played while moving a polished
steel bar or similar hard object against plucked strings. The bar itself is called a "steel" and is the source of the name "steel guitar". The instrument differs from a conventional guitar in that it does not use frets; conceptually, it is somewhat akin to playing a guitar with one finger (the bar). Known for its
portamento
In music, portamento (: ''portamenti''; from old , meaning 'carriage' or 'carrying'), also known by its French name glissade, is a pitch sliding from one Musical note, note to another. The term originated from the Italian language, Italian exp ...
capabilities, gliding smoothly over every pitch between notes, the instrument can produce a sinuous crying sound and deep
vibrato
Vibrato (Italian language, Italian, from past participle of "wikt:vibrare, vibrare", to vibrate) is a musical effect consisting of a regular, pulsating change of pitch (music), pitch. It is used to add expression to vocal and instrumental music. ...
emulating the human singing voice. Typically, the strings are plucked (not strummed) by the fingers of the dominant hand, while the steel tone bar is pressed lightly against the strings and moved by the opposite hand. The instrument is played while sitting, placed horizontally across the player's knees or otherwise supported. The horizontal playing style is called "Hawaiian style".
Twelve-string
The
twelve-string guitar
A twelve-string guitar (or 12-string guitar) is a steel-string guitar with 12 string (music), strings in six Course (music), courses, which produces a thicker, more ringing tone than a standard six-string guitar. Typically, the strings of the lo ...
usually has steel strings, and it is widely used in
folk music
Folk music is a music genre that includes #Traditional folk music, traditional folk music and the Contemporary folk music, contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be ca ...
,
blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
, and
rock and roll
Rock and roll (often written as rock & roll, rock-n-roll, and rock 'n' roll) is a Genre (music), genre of popular music that evolved in the United States during the late 1940s and early 1950s. It Origins of rock and roll, originated from African ...
. Rather than having only six strings, the 12-string guitar has six
courses made up of two strings each, like a
mandolin
A mandolin (, ; literally "small mandola") is a Chordophone, stringed musical instrument in the lute family and is generally Plucked string instrument, plucked with a plectrum, pick. It most commonly has four Course (music), courses of doubled St ...
or
lute
A lute ( or ) is any plucked string instrument with a neck (music), neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
More specifically, the term "lu ...
. The highest two courses are tuned in unison, while the others are tuned in octaves. The 12-string guitar is also made in electric forms. The chime-like sound of the 12-string electric guitar was the basis of
jangle pop
Jangle pop is a Music subgenre, subgenre of pop rock and college rock that emphasizes jangle, jangly guitars and 1960s-style pop music, pop melodies. The "jangly" guitar sound is characterized by its clean, shimmering and Arpeggio, arpeggiated ...
.
Acoustic bass

The acoustic bass guitar is a bass instrument with a hollow wooden body similar to, though usually somewhat larger than, that of a six-string acoustic guitar. Like the traditional
electric bass guitar
The bass guitar (), also known as the electric bass guitar, electric bass, or simply the bass, is the lowest-pitched member of the guitar family. It is similar in appearance and construction to an Electric guitar, electric but with a longer nec ...
and the
double bass
The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
, the acoustic bass guitar commonly has four strings, which are normally tuned E-A-D-G, an
octave
In music, an octave (: eighth) or perfect octave (sometimes called the diapason) is an interval between two notes, one having twice the frequency of vibration of the other. The octave relationship is a natural phenomenon that has been referr ...
below the lowest four strings of the six-string guitar, which is the same tuning pitch as an electric bass guitar. It can, more rarely, be found with five or six strings, which provides a wider range of notes to be played with less movement up and down the neck.
Electric

Electric guitars can have solid, semi-hollow, or hollow bodies; solid bodies produce little sound without amplification. In contrast to a standard acoustic guitar, electric guitars instead rely on
electromagnetic
In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interacti ...
pickups, and sometimes
piezoelectric
Piezoelectricity (, ) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied stress (mechanics), mechanical s ...
pickups, that convert the vibration of the steel strings into
signals
A signal is both the process and the result of Signal transmission, transmission of data over some transmission media, media accomplished by embedding some variation. Signals are important in multiple subject fields including signal processin ...
, which are fed to an
amplifier
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power su ...
through a
patch cable
A patch cable, patch cord or patch lead is an electrical or fiber-optic cable used to connect ("patch in") one electronic or optical device to another for signal routing. Devices of different types (e.g., a switch connected to a computer, or ...
or
radio
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connec ...
transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of sig ...
. The sound is frequently modified by other electronic devices (
effects units
An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.
Common effects include distortion/overdrive, often used with e ...
) or the natural
distortion
In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal ...
of valves (
vacuum tube
A vacuum tube, electron tube, thermionic valve (British usage), or tube (North America) is a device that controls electric current flow in a high vacuum between electrodes to which an electric voltage, potential difference has been applied. It ...
s) or the pre-amp in the amplifier. There are two main types of magnetic pickups,
single- and double-coil (or
humbucker
A humbucker, humbucking pickup, or double coil, is a guitar pickup that uses two wire coils to cancel out noisy interference from Single coil guitar pickup, coil pickups. Humbucking coils are also used in Microphone, dynamic microphones to can ...
), each of which can be
passive
Passive may refer to:
* Passive voice, a grammatical voice common in many languages, see also Pseudopassive
* Passive language, a language from which an interpreter works
* Passivity (behavior), the condition of submitting to the influence of ...
or
active. The electric guitar is used extensively in
jazz
Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana, in the late 19th and early 20th centuries. Its roots are in blues, ragtime, European harmony, African rhythmic rituals, spirituals, h ...
,
blues
Blues is a music genre and musical form that originated among African Americans in the Deep South of the United States around the 1860s. Blues has incorporated spiritual (music), spirituals, work songs, field hollers, Ring shout, shouts, cha ...
,
R & B, and
rock and roll
Rock and roll (often written as rock & roll, rock-n-roll, and rock 'n' roll) is a Genre (music), genre of popular music that evolved in the United States during the late 1940s and early 1950s. It Origins of rock and roll, originated from African ...
. The first successful magnetic pickup for a guitar was invented by
George Beauchamp
George Delmetia Beauchamp (; March 18, 1899 – March 30, 1941) was an American inventor of musical instruments. He is known for designing the first electrically amplified guitar to be marketed commercially. He was also a founder of Natio ...
, and incorporated into the 1931 Ro-Pat-In (later
Rickenbacker
Rickenbacker International Corporation is a string instrument manufacturer based in Santa Ana, California. Rickenbacker is the first known maker of electric guitars, with a steel guitar in 1932, and produces a range of electric guitars and bass ...
)
"Frying Pan" lap steel; other manufacturers, notably
Gibson, soon began to install pickups in archtop models. After World War II the completely solid-body electric was popularized by Gibson in collaboration with
Les Paul
Lester William Polsfuss (June 9, 1915 – August 12, 2009), known as Les Paul, was an American jazz guitarist, jazz, country guitarist, country, and blues guitarist, songwriter, luthier, and inventor. He was one of the pioneers of the solid body ...
, and independently by
Leo Fender
Clarence Leonidas Fender (August 10, 1909 – March 21, 1991) was an American inventor and founder of the Fender Musical Instruments Corporation. Fender designed the company's iconic early instruments: the Fender Telecaster, the first mass-prod ...
of
Fender Music. The lower fretboard
action
Action may refer to:
* Action (philosophy), something which is done by a person
* Action principles the heart of fundamental physics
* Action (narrative), a literary mode
* Action fiction, a type of genre fiction
* Action game, a genre of video gam ...
(the height of the strings from the fingerboard), lighter (thinner) strings, and its electrical amplification lend the electric guitar to techniques less frequently used on acoustic guitars. These include
tapping
Tapping is a playing technique that can be used on any stringed instrument, but which is most commonly used on guitar. The technique involves a string being fretted and set into vibration as part of a single motion. This is in contrast to stand ...
, extensive use of
legato
In music performance and notation, legato (; Italian for "tied together"; French ''lié''; German ''gebunden'') indicates that musical notes are played or sung smoothly, such that the transition from note to note is made with no intervening si ...
through
pull-offs and
hammer-ons (also known as slurs),
pinch harmonics,
volume swells, and use of a
tremolo arm
A vibrato system on a guitar is a mechanical device used to temporarily change the pitch (music), pitch of the strings. It adds vibrato to the sound by changing the Tension (physics), tension of the strings, typically at the Bridge (instrument), ...
or
effects pedals
An effects unit, effects processor, or effects pedal is an electronic device that alters the sound of a musical instrument or other audio source through audio signal processing.
Common effects include distortion (music), distortion/overdrive, ...
.
Some electric guitar models feature
piezoelectric
Piezoelectricity (, ) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied stress (mechanics), mechanical s ...
pickups, which function as
transducer
A transducer is a device that Energy transformation, converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another.
Transducers are often employed at the boundaries of automation, M ...
s to provide a sound closer to that of an acoustic guitar with the flip of a switch or knob, rather than switching guitars. Those that combine piezoelectric pickups and magnetic pickups are sometimes known as hybrid guitars.
Hybrids of acoustic and electric guitars are also common. There are also more exotic varieties, such as guitars with
two, three, or rarely four necks, all manner of alternate string arrangements,
fretless fingerboards (used almost exclusively on bass guitars, meant to emulate the sound of a
stand-up bass),
5.1 surround guitar, and such.
Seven-string and eight-string
Solid-body seven-string guitars were popularized in the 1980s and 1990s. Other artists go a step further, by using an eight-string guitar with two extra low strings. Although the most common seven-string has a low B string,
Roger McGuinn
James Roger McGuinn (; born James Joseph McGuinn III; July 13, 1942) is an American musician, best known for being the frontman and leader of the Byrds. He was inducted into the Rock and Roll Hall of Fame in 1991 as a member of the band. As a so ...
(of
The Byrds
The Byrds () were an American Rock music, rock band formed in Los Angeles, California, in 1964. The band underwent multiple lineup changes throughout its existence, with frontman Roger McGuinn (known as Jim McGuinn until mid-1967) being the so ...
and
Rickenbacker
Rickenbacker International Corporation is a string instrument manufacturer based in Santa Ana, California. Rickenbacker is the first known maker of electric guitars, with a steel guitar in 1932, and produces a range of electric guitars and bass ...
) uses an octave G string paired with the regular G string as on a 12-string guitar, allowing him to incorporate chiming 12-string elements in standard six-string playing. In 1982
Uli Jon Roth
Uli Jon Roth (born Ulrich Roth; 18 December 1954) is a German guitarist who became famous for his work with the hard rock band Scorpions and is one of the earliest contributors to the neoclassical metal genre. He is also founder of the Sky Ac ...
developed the "Sky Guitar", with a vastly extended number of frets, which was the first guitar to venture into the upper registers of the violin. Roth's seven-string and "Mighty Wing" guitar features a wider octave range.
Electric bass
The bass guitar (also called an "electric bass", or simply a "bass") is similar in appearance and construction to an electric guitar, but with a longer neck and
scale length, and four to six strings. The four-string bass, by far the most common, is usually tuned the same as the
double bass
The double bass (), also known as the upright bass, the acoustic bass, the bull fiddle, or simply the bass, is the largest and lowest-pitched string instrument, chordophone in the modern orchestra, symphony orchestra (excluding rare additions ...
, which corresponds to pitches one octave lower than the four lowest pitched strings of a guitar (E, A, D, and G). The bass guitar is a
transposing instrument
A transposing instrument is a musical instrument for which music notation is not written at concert pitch (concert pitch is the pitch on a non-transposing instrument such as the piano). For example, playing a written middle C on a transposing ...
, as it is notated in
bass clef
A clef (from French: 'key') is a musical symbol used to indicate which notes are represented by the lines and spaces on a musical staff. Placing a clef on a staff assigns a particular pitch to one of the five lines or four spaces, whi ...
an octave higher than it sounds (as is the double bass) to avoid excessive
ledger line
A ledger line or leger line is used in Western musical notation to notate pitches above or below the lines and spaces of the regular musical staff. A line slightly longer than the note head is drawn parallel to the staff, above or below, spaced ...
s being required below the
staff. Like the electric guitar, the bass guitar has
pickups and it is plugged into an
amplifier and speaker for live performances.
Construction
Handedness
Modern guitars can be constructed to suit both left- and right-handed players. Typically the dominant hand is used to pluck or strum the strings. This is similar to the
violin
The violin, sometimes referred to as a fiddle, is a wooden chordophone, and is the smallest, and thus highest-pitched instrument (soprano) in regular use in the violin family. Smaller violin-type instruments exist, including the violino picc ...
family of instruments where the dominant hand controls the bow. Left-handed players usually play a mirror image instrument manufactured especially for left-handed players.
There are other options, some unorthodox, including learn to play a right-handed guitar as if the player is right-handed or playing an unmodified right-handed guitar reversed. Guitarist
Jimi Hendrix
James Marshall "Jimi" Hendrix (born Johnny Allen Hendrix; November 27, 1942September 18, 1970) was an American singer-songwriter and musician. He is widely regarded as one of the greatest and most influential guitarists of all time. Inducted ...
played a right-handed guitar strung in reverse (the treble strings and bass strings reversed).
The problem with doing this is that it reverses the guitar's saddle angle.
The saddle is the strip of material on top of the bridge where the strings rest. It is normally slanted slightly, making the bass strings longer than the treble strings.
In part, the reason for this is the difference in the thickness of the strings.
Physical properties of the thicker bass strings require them to be slightly longer than the treble strings to correct
intonation.
Reversing the strings, therefore, reverses the orientation of the saddle, adversely affecting intonation.
Components
Head
The headstock is located at the end of the guitar neck farthest from the body. It is fitted with machine heads that adjust the tension of the strings, which in turn affects the pitch. The traditional tuner layout is "3+3", in which each side of the headstock has three tuners (such as on
Gibson Les Paul
The Gibson Les Paul is a solid body electric guitar that was first sold by the Gibson Guitar Corporation in 1952. The guitar was designed by factory manager John Huis and his team with input from and endorsement by guitarist Les Paul. Its typic ...
s). In this layout, the headstocks are commonly symmetrical. Many guitars feature other layouts, including six-in-line tuners (featured on
Fender Stratocaster
The Fender Stratocaster, colloquially known as the Strat, is a model of double- cutaway electric guitar designed between 1952 and 1954 by Leo Fender, Bill Carson, George Fullerton, and Freddie Tavares. The Fender Musical Instruments Corpora ...
s) or even "4+2" (e.g. Ernie Ball Music Man). Some guitars (such as
Steinbergers) do not have headstocks at all, in which case the tuning machines are located elsewhere, either on the body or the bridge.
The nut is a small strip of
bone
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, ...
,
plastic
Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding ...
,
brass
Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...
,
corian,
graphite
Graphite () is a Crystallinity, crystalline allotrope (form) of the element carbon. It consists of many stacked Layered materials, layers of graphene, typically in excess of hundreds of layers. Graphite occurs naturally and is the most stable ...
,
stainless steel
Stainless steel, also known as inox, corrosion-resistant steel (CRES), or rustless steel, is an iron-based alloy that contains chromium, making it resistant to rust and corrosion. Stainless steel's resistance to corrosion comes from its chromi ...
, or other medium-hard material, at the joint where the headstock meets the fretboard. Its grooves guide the strings onto the fretboard, giving consistent lateral string placement. It is one of the endpoints of the strings' vibrating length. It must be accurately cut, or it can contribute to tuning problems due to string slippage or string buzz. To reduce string friction in the nut, which can adversely affect tuning stability, some guitarists fit a roller nut. Some instruments use a zero fret just in front of the nut. In this case the nut is used only for lateral alignment of the strings, the string height and length being dictated by the zero fret.
Neck
A guitar's
frets
A fret is any of the thin strips of material, usually metal wire, inserted laterally at specific positions along the Neck (music), neck or Fingerboard, fretboard of a stringed instrument. Frets usually extend across the full width of the Neck ( ...
,
fretboard,
tuners,
headstock
A headstock or peghead is part of a guitar or similar stringed instruments such as a lute, mandolin, banjo, ukulele and others of the lute lineage. The main function of a headstock is to house the tuning pegs or other mechanism that holds the s ...
, and
truss rod, all attached to a long wooden extension, collectively constitute its
neck
The neck is the part of the body in many vertebrates that connects the head to the torso. It supports the weight of the head and protects the nerves that transmit sensory and motor information between the brain and the rest of the body. Addition ...
. The wood used to make the fretboard usually differs from the wood in the rest of the neck. The bending stress on the neck is considerable, particularly when heavier gauge strings are used (see
Tuning), and the ability of the neck to resist bending (see
Truss rod) is important to the guitar's ability to hold a constant pitch during tuning or when strings are fretted. The rigidity of the neck with respect to the body of the guitar is one determinant of a good instrument versus a poor-quality one.
The cross-section of the neck can also vary, from a gentle "C" curve to a more pronounced "V" curve. There are many different types of neck profiles available, giving the guitarist many options. Some aspects to consider in a guitar neck may be the overall width of the fretboard, scale (distance between the frets), the neck wood, the type of neck construction (for example, the neck may be glued in or bolted on), and the shape (profile) of the back of the neck. Other types of material used to make guitar necks are graphite (
Steinberger guitars), aluminum (
Kramer Guitars
Kramer Guitars is an American manufacturer of electric guitars and basses. Kramer produced aluminum-necked electric guitars and basses in the 1970s and wooden-necked guitars catering to hard rock and heavy metal musicians in the 1980s; Kramer is ...
,
Travis Bean and
Veleno guitars), or carbon fiber (
Modulus Guitars
Modulus Graphite (formerly, ''Modulus Guitars'') is an American manufacturer of musical instruments best known for building bass guitars with carbon fiber necks. The company, originally called Modulus Graphite, was founded in part by Geoff Goul ...
and
ThreeGuitars).
Double neck electric guitars have two necks, allowing the musician to quickly switch between guitar sounds.
The neck joint or heel is the point at which the neck is either bolted or glued to the body of the guitar. Almost all acoustic steel-string guitars, with the primary exception of Taylors, have glued (otherwise known as set) necks, while electric guitars are constructed using both types. Most classical guitars have a neck and headblock carved from one piece of wood, known as a "Spanish heel". Commonly used set neck joints include
mortise and tenon
A mortise and tenon (occasionally mortice and tenon) is a Woodworking joints, joint that connects two pieces of wood or other material. Woodworking, Woodworkers around the world have used it for thousands of years to join pieces of wood, mainly ...
joints (such as those used by C. F. Martin & Co.), dovetail joints (also used by C. F. Martin on the D-28 and similar models) and Spanish heel neck joints, which are named after the shoe they resemble and commonly found in classical guitars. All three types offer stability.
Bolt-on necks, though they are historically associated with cheaper instruments, do offer greater flexibility in the guitar's set-up, and allow easier access for neck joint maintenance and repairs. Another type of neck, only available for solid-body electric guitars, is the
neck-through-body construction. These are designed so that everything from the machine heads down to the bridge is located on the same piece of wood. The sides (also known as wings) of the guitar are then glued to this central piece. Some luthiers prefer this method of construction as they claim it allows better sustain of each note. Some instruments may not have a neck joint at all, having the neck and sides built as one piece and the body built around it.
The
fingerboard
The fingerboard (also known as a fretboard on fretted instruments) is an important component of most stringed instruments. It is a thin, long strip of material, usually wood, that is laminated to the front of the neck of an instrument. The stri ...
, also called the fretboard, is a piece of wood embedded with metal frets that comprises the top of the neck. It is flat on classical guitars and slightly curved crosswise on acoustic and electric guitars. The curvature of the fretboard is measured by the fretboard radius, which is the radius of a hypothetical circle of which the fretboard's surface constitutes a segment. The smaller the fretboard radius, the more noticeably curved the fretboard is. Most modern guitars feature a 12" neck radius, while older guitars from the 1960s and 1970s usually feature a 6-8" neck radius. Pinching a string against a fret on the fretboard effectively shortens the vibrating length of the string, producing a higher pitch.
Fretboards are most commonly made of
rosewood
Rosewood is any of a number of richly hued hardwoods, often brownish with darker veining, but found in other colours. It is hard, tough, strong, and dense. True rosewoods come from trees of the genus '' Dalbergia'', but other woods are often ca ...
,
ebony
Ebony is a dense black/brown hardwood, coming from several species in the genus '' Diospyros'', which also includes the persimmon tree. A few ''Diospyros'' species, such as macassar and mun ebony, are dense enough to sink in water. Ebony is fin ...
,
maple
''Acer'' is a genus of trees and shrubs commonly known as maples. The genus is placed in the soapberry family Sapindaceae.Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 nd more or less continuously updated si ...
, and sometimes manufactured using composite materials such as HPL or resin. See the section "Neck" below for the importance of the length of the fretboard in connection to other dimensions of the guitar. The fingerboard plays an essential role in the treble tone for acoustic guitars. The quality of vibration of the fingerboard is the principal characteristic for generating the best treble tone. For that reason, ebony wood is better, but because of high use, ebony has become rare and extremely expensive. Most guitar manufacturers have adopted rosewood instead of ebony.
=Frets
=
Almost all guitars have frets, which are metal strips (usually nickel alloy or stainless steel) embedded along the fretboard and located at exact points that divide the scale length in accordance with a specific mathematical formula. The exceptions include
fretless bass
A fretless bass is an electric bass guitar whose neck lacks frets and thus is smooth like traditional string instruments, and like the neck of an acoustic double bass. While the fretless bass is played in all styles of music, it is most common in ...
guitars and very rare fretless guitars. Pressing a string against a fret determines the strings' vibrating length and therefore its resultant pitch. The pitch of each consecutive fret is defined at a half-step interval on the
chromatic scale
The chromatic scale (or twelve-tone scale) is a set of twelve pitches (more completely, pitch classes) used in tonal music, with notes separated by the interval of a semitone. Chromatic instruments, such as the piano, are made to produce the ...
. Standard classical guitars have 19 frets and electric guitars between 21 and 24 frets, although guitars have been made with as many as 27 frets. Frets are laid out to accomplish an
equal tempered
An equal temperament is a musical temperament or tuning system that approximates just intervals by dividing an octave (or other interval) into steps such that the ratio of the frequencies of any adjacent pair of notes is the same. This system ...
division of the octave. Each set of twelve frets represents an octave. The twelfth fret divides the
scale length exactly into two halves, and the 24th fret position divides one of those halves in half again.
The
ratio
In mathematics, a ratio () shows how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the ...
of the spacing of two consecutive frets is