
Accordions (from 19th-century
German ', from '—"musical chord, concord of sounds") are a family of box-shaped
musical instrument
A musical instrument is a device created or adapted to make Music, musical sounds. In principle, any object that produces sound can be considered a musical instrument—it is through purpose that the object becomes a musical instrument. A person ...
s of the
bellows-driven
free reed aerophone type (producing sound as air flows past a
reed in a frame). The essential characteristic of the accordion is to combine in one instrument a melody section, also called the
diskant, usually on the right-hand keyboard, with an accompaniment or
Basso continuo functionality on the left-hand. The musician normally plays the
melody
A melody (), also tune, voice, or line, is a linear succession of musical tones that the listener perceives as a single entity. In its most literal sense, a melody is a combination of Pitch (music), pitch and rhythm, while more figurativel ...
on buttons or keys on the right-hand side (referred to as the
keyboard or sometimes the
''manual''), and the
accompaniment on
bass or pre-set
chord buttons on the left-hand side. A person who plays the accordion is called an accordionist.
The accordion belongs to the free-reed aerophone family. Other instruments in this family include the
concertina,
harmonica, and
bandoneon. The concertina and bandoneon do not have the melody–accompaniment duality. The
harmoneon is also related and, while having the descant vs. melody dualism, tries to make it less pronounced. The
harmonium and
American reed organ are in the same family, but are typically larger than an accordion and sit on a surface or the floor.
The accordion is played by compressing or expanding the bellows while pressing buttons or
keys, causing ''pallets'' to open, which allow air to flow across strips of brass or steel, called ''reeds''. These vibrate to produce sound inside the body. Valves on opposing reeds of each note are used to make the instrument's reeds sound louder without air leaking from each reed block.
[For the accordion's place among the families of musical instruments, see Henry Doktorski']
''Taxonomy of Musical Instruments'' (''The Classical Free-Reed, Inc.'')
Also on this page is Diarmuid Pigott's ''The Free-Reed Family of Aerophones''
The accordion is widely spread across the world because of the waves of migration from Europe to the Americas and other regions. In some countries (for example: Argentina, Brazil, Colombia, the Dominican Republic, Mexico, and Panama) it is used in popular music (for example:
Chamamé in Argentina; gaucho,
forró, and
sertanejo in Brazil;
vallenato in Colombia;
merengue in the Dominican Republic; and
norteño in Mexico), whereas in other regions (such as Europe, North America, and other countries in South America) it tends to be more used for
dance-pop and
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 ...
.
In Europe and North America,
some popular music acts also make use of the instrument. Additionally, the accordion is used in
cajun,
zydeco,
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
klezmer music, and in both solo and orchestral performances of
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 ...
. Many conservatories in Europe have classical accordion departments. The oldest name for this group of instruments is ''harmonika'', from the Greek ', meaning "harmonic, musical". Today, native versions of the name ''accordion'' are more common. These names refer to the type of accordion
patented by Cyrill Demian, which concerned "automatically coupled chords on the bass side".
History

The accordion's basic form is believed to have been invented in
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
, in 1822, by
Christian Friedrich Ludwig Buschmann,
[There is not a single document to back up this belief. Christian Friedrich Ludwig Buschmann was 16 years old at that time; handwritten evidence of C.F. Buschschmann and his father exists, but without any related notice within. The first mention of an aeoline was in a text dated 1829.] although one instrument was discovered in 2006 that appears to have been built earlier.
[This is the accordion owned by Fredrik Dillner of Sweden, which has the name F. Löhner Nürnberg engraved (stamped) on it. The instrument was given to Johannes Dillner in 1830 or earlier]
The accordion is one of several European inventions of the early 19th century that use free reeds driven by a bellows. An instrument called ''accordion'' was first patented in 1829 by
Cyrill Demian in
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
.
[A summary and pictures of this patent can be found a]
www.ksanti.net/free-reed/history/demian.html
(Version of 20 Okt 4 – 19 Jun 9 Using Way Back Machine to Display: The Classical Free-Reed, Inc.)
The earliest history of the accordion in Russia is poorly documented. Nevertheless, according to Russian researchers, the earliest known simple accordions were made in
Tula, Russia
Tula (, ) is the largest city and the administrative center of Tula Oblast in Russia, located south of Moscow. Tula is located in the northern Central Russian Upland on the banks of the Upa (river), Upa River, a tributary of the Oka (river), Ok ...
, by
Ivan Sizov and
Timofey Vorontsov around 1830, after they received an early accordion from Germany. By the late 1840s, the instrument was already very widespread; together the factories of the two masters were producing 10,000 instruments a year. By 1866, over 50,000 instruments were being produced yearly by Tula and neighbouring villages, and by 1874 the yearly production was over 700,000. By the 1860s,
Novgorod
Veliky Novgorod ( ; , ; ), also known simply as Novgorod (), is the largest city and administrative centre of Novgorod Oblast, Russia. It is one of the oldest cities in Russia, being first mentioned in the 9th century. The city lies along the V ...
,
Vyatka and
Saratov
Saratov ( , ; , ) is the largest types of inhabited localities in Russia, city and administrative center of Saratov Oblast, Russia, and a major port on the Volga River. Saratov had a population of 901,361, making it the List of cities and tow ...
governorates also had significant accordion production. By the 1880s, the list included
Oryol,
Ryazan
Ryazan (, ; also Riazan) is the largest types of inhabited localities in Russia, city and administrative center of Ryazan Oblast, Russia. The city is located on the banks of the Oka River in Central Russia, southeast of Moscow. As of the 2010 C ...
,
Moscow
Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents with ...
,
Tver
Tver (, ) is a types of inhabited localities in Russia, city and the administrative centre of Tver Oblast, Russia. It is situated at the confluence of the Volga and Tvertsa rivers. Tver is located northwest of Moscow. Population:
The city is ...
,
Vologda,
Kostroma,
Nizhny Novgorod
Nizhny Novgorod ( ; rus, links=no, Нижний Новгород, a=Ru-Nizhny Novgorod.ogg, p=ˈnʲiʐnʲɪj ˈnovɡərət, t=Lower Newtown; colloquially shortened to Nizhny) is a city and the administrative centre of Nizhny Novgorod Oblast an ...
and
Simbirsk, and many of these places created their own varieties of the instrument.
Cyrill Demian's instrument bore little resemblance to modern instruments. It only had a left-hand buttonboard, with the right hand simply operating the bellows. One key feature for which Demian sought the patent was the sounding of an entire chord by depressing one key. His instrument could also sound two chords with the same key, one for each bellow direction (a ''bisonoric'' action). At that time in Vienna, mouth
harmonicas with ''Kanzellen'' (chambers) had already been available for many years, along with bigger instruments driven by hand bellows. The
diatonic key arrangement was also already used on mouth-blown instruments. Demian's patent thus covered an accompanying instrument: an accordion played with the left hand, opposite to how contemporary chromatic hand harmonicas were played, small and light enough for travelers to take with them and used to accompany singing. The patent also described instruments with both
bass and
treble sections, although Demian preferred the bass-only instrument owing to its cost and weight advantages.
[German Text: "Mit den Dekel des Balges, läßt sich das ganze Instrument verdoppeln, so daß man dadurch die Accorde vermehrt, oder auch mit einzelne Töne spielen kann, in diesem Fall, muß ein zweyter Einsatz mit Federn, und auch eine 2te Claviatur dazu kommen, der Blasebalg bleibt in der Mitte, jede Hand dirigirt abwechselnd, entweder die Claves, oder den Balg. Durch eine obengenannte Verdoplung des Instruments oder durch Vermehrung der Accorde, würde niemand etwas verbessern, oder was neues liefern, weil nur die Bestandtheile dadurch vermehrt, das Instrument theurer und schwerer wird."
Translation of this snip: With the Cover of the bellows the instrument can be duplicated, so the number of Chords or single notes can be enlarged, or one can sound single notes, in this case, a second part with springs (free reeds) and also a second keyboard must be added, the bellows are in between these two parts, both hands push buttons and push and pull the bellows at the same time or alternatively. Through this doubling or increasing of chords within the instrument nothing new is invented or improved by someone else, because only the amount of similar parts is increased and the Instrument is heavier and more expensiv]
German full text
The accordion was introduced from Germany into Britain in about the year 1828. The instrument was noted in ''
The Times
''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' in 1831 as one new to British audiences and was not favourably reviewed, but nevertheless it soon became popular. It had also become popular with New Yorkers by the mid-1840s.
After Demian's invention, other accordions appeared, some featuring only the right-handed keyboard for playing melodies. It took English inventor
Charles Wheatstone
Sir Charles Wheatstone (; 6 February 1802 – 19 October 1875) was an English physicist and inventor best known for his contributions to the development of the Wheatstone bridge, originally invented by Samuel Hunter Christie, which is used to m ...
to bring both chords and keyboard together in one squeezebox. His 1844 patent for what he called a ''
concertina'' also featured the ability to easily tune the reeds from the outside with a simple tool.

The
Austrian musician
Adolf Müller described a great variety of instruments in his 1854 book '. At the time, Vienna and London had a close musical relationship, with musicians often performing in both cities in the same year, so it is possible that Wheatstone was aware of this type of instrument and may have used them to put his key-arrangement ideas into practice.
Jeune's ''
flutina'' resembles Wheatstone's concertina in internal construction and
tone colour, but it appears to complement Demian's accordion functionally. The flutina is a one-sided bisonoric melody-only instrument whose keys are operated with the right hand while the bellows are operated with the left. When the two instruments are combined, the result is quite similar to diatonic button accordions still manufactured today.
Further innovations followed and continue to the present. Various buttonboard and keyboard systems have been developed, as well as voicings (the combination of multiple tones at different octaves), with mechanisms to switch between different voices during performance, and different methods of internal construction to improve tone, stability, and durability. Modern accordions may incorporate electronics such as condenser microphones and tone and volume controls so that the accordion can be plugged into a
PA system or
keyboard amplifier
A keyboard amplifier is a powered instrument amplifier, electronic amplifier and loudspeaker in a speaker enclosure, speaker cabinet used for the amplification of electronic keyboard instruments. Keyboard amplifiers are distinct from other type ...
for live shows. Some 2010s-era accordions may incorporate
MIDI sensors and circuitry, enabling the accordion to be plugged into a
synth module and produce accordion sounds or other synthesized instrument sounds, such as piano or organ.
Construction
Accordions have many configurations and types. What may be easy to do with one type of accordion could be technically challenging or impossible with another, and proficiency with one layout may not translate to another.
The most obvious difference between accordions is their right-hand sides.
Piano accordions use a piano-style
musical keyboard; button accordions use a buttonboard. Button accordions are furthermore differentiated by their usage of a
chromatic or
diatonic buttonboard for the right-hand side.
Accordions may be either bisonoric, producing different
pitches depending on the direction of bellows movement, or unisonoric, producing the same pitch in both directions. Piano accordions are unisonoric.
Chromatic button accordions also tend to be unisonoric, while
diatonic button accordions tend to be bisonoric, though notable exceptions exist.
Accordion size is not standardized, and may vary significantly from model to model. Accordions vary not only in their dimensions and weight, but also in the number of buttons or keys present in the right- and left-hand keyboards. For example, piano accordions may have as few as 8 bass buttons (two rows of four), or up to 140 (seven rows of twenty) or beyond. Accordions also vary by their
available registers and by their specific tuning and voicing.
Despite these differences, all accordions share several common components.
Universal components
Bellows

The
bellows is the most recognizable part of the instrument, and the primary means of
articulation. The production of sound in an accordion is in direct proportion to the motion of the bellows by the player. In a sense, the role of the bellows can be compared to the role of moving a
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 ...
's bow on bowed strings. For a more direct analogy, the bellows can be compared to the role of breathing for a singer. The bellows is located between the right- and left-hand keyboards, and is made from
pleated layers of cloth and cardboard, with added leather and metal. It is used to create pressure and vacuum, driving air across the internal
reeds and producing sound by their vibrations, applied pressure increases the volume.
The keyboard touch is not
expressive and does not affect
dynamics: all expression is effected through the bellows. Bellows effects include:
* Volume control, including swells and fades
* Repeated short, rapid changes of direction ("bellows shake"), which has been popularized by musicians such as
Renato Borghetti (
gaucho
A gaucho () or gaúcho () is a skilled horseman, reputed to be brave and unruly. The figure of the gaucho is a folk symbol of Argentina, Paraguay, Uruguay, Rio Grande do Sul in Brazil, the southern part of Bolivia, and the south of Chilean Patago ...
music) and
Luiz Gonzaga, and extensively used in
Forró, called ''resfulego'' in Brazil
* Constant bellows motion while applying pressure at intervals
* Constant bellows motion to produce clear tones with no resonance
* Subtly changing the intonation to mimic the expressiveness of a singer
* Using the bellows with the silent air button gives the sound of air moving ("whooshing"), which is sometimes used in contemporary compositions for this instrument
Body
The accordion's body consists of two boxes, commonly made of wood, joined by the bellows. These boxes house reed chambers for the right- and left-hand keyboards. Each side has
grilles in order to facilitate the transmission of air in and out of the instrument and to allow the sound to project. The grille at the right-hand side is usually larger and is often shaped for decorative purposes. The right-hand keyboard is normally used for playing the melody and the left-hand one for playing the accompaniment; however, skilled players can reverse these roles and play melodies with the left hand.
[ Guido Deiro claimed he was the first accordionist to play a solo with the left hand: ''Sharpshooter's March'' (1908) Guido Deiro, ''Guido Deiro's Own Story of Sharpshooters March'', ''The Pietro Musicordion'', Volume 6, Number 2 (May–June 1948)]
The size and weight of an accordion varies depending on its type, layout and playing range, which can be as small as to have only one or two rows of basses and a single
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 ...
on the right-hand keyboard, to the most common 120-bass accordion and through to large and heavy 160-bass free-bass converter models.
Pallet mechanism
The accordion is an
aerophone. The keyboard mechanisms of the instrument either enable the air flow, or disable it:
[Illustration made with reference from a similar illustration that can be found in both ''Det levende bælgspil'' (p. 9) by Jeanette & Lars Dyremose (2003), and ''Harmonikaens historie'' (p. 35a) by Bjarne Glenstrup (1972, The University of Copenhagen, Faculty of Music)]
Variable components
The term ''accordion'' covers a wide range of instruments, with varying components. All instruments have reed ranks of some format, apart from reedless
digital accordions. Not all have switches to change registers or ranks, as some have only one treble register and one bass register. The most typical accordion is the piano accordion, which is used for many musical genres. Another type of accordion is the button accordion, which is used in musical traditions including Cajun, Conjunto and
Tejano music, Swiss and Slovenian-Austro-German Alpine music, and Argentinian tango music. The
Helikon-style accordion has multiple flared horns projecting out of the left side to strengthen the bass tone. The word "
Helikon" refers to a deep-pitched tuba.
Right-hand keyboard systems
Different systems exist for the right-hand keyboard of an accordion, which is normally used for playing the melody (while it can also play chords). Some use a
button layout arranged in one way or another, while others use a
piano
A piano is a keyboard instrument that produces sound when its keys are depressed, activating an Action (music), action mechanism where hammers strike String (music), strings. Modern pianos have a row of 88 black and white keys, tuned to a c ...
-style keyboard. Each system has different claimed benefits
by those who prefer it. They are also used to define one accordion or another as a different "type":
*
Chromatic button accordions and the
bayan, a Russian variant, use a buttonboard where notes are arranged
chromatically. Two major systems exist, referred to as the B-system and the C-system (there are also regional variants). Rarely, some chromatic button accordions have a decorative right-hand keyboard in addition to the rows of buttons, an approach used by the virtuoso accordionist
Pietro Frosini.
*
Diatonic button accordions use a buttonboard designed around the notes of
diatonic scales in a small number of keys. The keys are often arranged in one row for each key available. Chromatic scales may be available by combining notes from different rows. The adjective "diatonic" is also commonly used to describe bisonic or bisonoric accordions—that is, instruments whose right-hand (and in some instances even bass) keys each sound two different notes depending on the direction of the bellows (for instance, producing major triad sequences while closing the bellows and dominant seventh or 7–9 while opening). Such is the case, for instance, with the Argentinian
bandoneon, the Slovenian-Austro-German
Steirische Harmonika, the Czech Heligonka Harmonika, the Italian
organetto, the Swiss
Schwyzerörgeli and the
Anglo concertina.
*
Piano accordions use a
musical keyboard similar to a piano, at right angles to the cabinet, the tops of the keys inward toward the bellows.
**The rarely used bass accordion has only a right-hand keyboard, with ranks of 8', 16', and 32' reeds, with the lowest note being the deepest pitch on a pipe organ
pedal keyboard (pedal C). It is intended for performing
bassline
Bassline (also known as a bass line or bass part) is the term used in many styles of music, such as blues, jazz, funk, Dub music, dub and electronic music, electronic, traditional music, traditional, and classical music, for the low-pitched P ...
s in accordion orchestras.
**The rarely used piccolo accordion also has only a right-hand keyboard.
*
6-plus-6 accordions use a buttonboard with three rows of buttons in a "uniform" or "whole-tone" arrangement, generally known as a
Jankó keyboard. The chromatic scale consists of two rows. The third row is a repetition of the first row, so there is the same fingering in all twelve scales. These accordions are produced only in special editions e.g. the ''logicordion'' produced by
Harmona.
Italian Button Accordion QM r.jpg, A button key accordion made by the company Marrazza in Italy. It was brought by Italian immigrants to Australia as a reminder of their homeland.
PianoAccordeon.jpg, A ''Weltmeister'' piano accordion by VEB Klingenthaler Harmonikawerke
Left-hand keyboard systems

Different systems are also in use for the left-hand keyboard, which is normally used for playing the accompaniment. These usually use distinct bass buttons and often have buttons with concavities or studs to help the player navigate the layout despite not being able to see the buttons while playing. There are three general categories:

* The
Stradella bass system, also called ''standard bass'', is arranged in a
circle of fifths and uses single buttons for bass notes and additional rows of single buttons for preset major, minor, dominant seventh, and diminished
chords. The dominant seventh and diminished chords are three-note chord voicings that omit the fifths of the chords.
* The Belgian bass system is a variation used in Belgian chromatic accordions. It is also arranged in a circle of fifths but in reverse order. This system has three rows of basses, three rows of chord buttons allowing easier fingering for playing melodies, combined chords, better use of fingers one and five, and more space between the buttons. This system was rarely used outside of its native Belgium.
* Various
free-bass systems for greater access to playing melodies and complex
bassline
Bassline (also known as a bass line or bass part) is the term used in many styles of music, such as blues, jazz, funk, Dub music, dub and electronic music, electronic, traditional music, traditional, and classical music, for the low-pitched P ...
s on the left-hand keyboard and to forming one's own chords note-by-note. These are often chosen for playing
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
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 ...
. Some models can convert between free-bass and Stradella bass; this is called ''converter bass''. The free-bass left hand notes are arranged chromatically in three rows with one additional duplicate row of buttons.
* Luttbeg double-keyboard piano accordions have a piano keyboard layout on both the treble and bass sides. This allows
pianists, most notably
Duke Ellington
Edward Kennedy "Duke" Ellington (April 29, 1899 – May 24, 1974) was an American Jazz piano, jazz pianist, composer, and leader of his eponymous Big band, jazz orchestra from 1924 through the rest of his life.
Born and raised in Washington, D ...
, to double up on the accordion without difficulty. The
Bercandeon is an improved version of that instrument, also making it a "keyboard bandoneon".
* In 2021, a patent was published by Valerio Chiovarelli for a new bass system called the "Chiovarelli Jazz System". This system is a variation of the Stradella bass system where, instead of triads, the chordal buttons of this system produce bichords (chords with only 2 pitches instead of 3). The "Chiovarellia Jazz System" (or "CJS" for short) prioritizes the effectiveness of left hand accordion in jazz music, hence the name of the system, but according to the inventor, these chords can be useful when playing many varieties of music.
Reed ranks and switches
Inside the accordion are the reeds that generate the instrument tones. These are organized in different sounding ''banks'', which can be further combined into ''registers'' producing differing ''
timbres''. All but the smaller accordions are equipped with switches that control which combination of reed banks operate, organized from high to low
registers. Each register stop produces a separate sound timbre, many of which also differ in octaves or in how different octaves are combined. See the
accordion reed ranks and switches article for further explanation and audio samples. All but the smaller accordions usually have treble switches. The larger and more expensive accordions often also have bass switches to give options for the reed bank on the bass side.
Classification of chromatic and piano type accordions
In describing or pricing an accordion, the first factor is size, expressed in number of keys on either side. For a piano type, this could for one example be 37/96, meaning 37 treble keys (three octaves plus one note) on the treble side and 96 bass keys. A second aspect of size is the width of the white keys, which means that even accordions with the same number of keys have keyboards of different lengths, ranging from for a child's accordion to for an adult-sized instrument. After size, the price and weight of an accordion is largely dependent on the number of reed ranks on either side, either on a
cassotto or not, and to a lesser degree on the number of combinations available through register switches. The next, but important, factor is the quality of the reeds, the highest grade called "a mano" (meaning "hand-made"), the next "tipo a mano" ("like hand-made"), lower grades including "export" and several more.
Price is also affected by the use of costly woods, luxury decorations, and features such as a palm switch, grille mute, and so on. Some accordion makers sell a range of different models, from a less-expensive base model to a more costly luxury model. Typically, the register switches are described as ''Reeds: 5 + 3'', meaning five reeds on the treble side and three on the bass, and ''Registers: 13 + M, 7'', meaning 13 register buttons on the treble side plus a special "master" that activates all ranks, like the "tutti" or "full organ" switch on an organ, and seven register switches on the bass side. Another factor affecting the price is the presence of electronics, such as condenser microphones, volume and tone controls, or MIDI sensors and connections.
Straps
The larger piano and chromatic button accordions are usually heavier than other smaller
squeezeboxes, and are equipped with two shoulder straps to make it easier to balance the weight and increase bellows control while sitting, and avoid dropping the instrument while standing. Other accordions, such as the
diatonic button accordion, have only a single shoulder strap and a right hand thumb strap. All accordions have a (mostly adjustable) leather strap on the left-hand side to keep the player's hand in position while drawing the bellows. There are also straps above and below the bellows to keep it securely closed when the instrument is not being played.
Electronic and digital
In the 2010s, a range of electronic and digital accordions were introduced. They have an electronic
sound module which creates the accordion sound, and most use
MIDI
Musical Instrument Digital Interface (; MIDI) is an American-Japanese technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, ...
systems to encode the keypresses and transmit them to the sound module. A digital accordion can have hundreds of sounds, which can include different types of accordions and even non-accordion sounds, such as pipe organ, piano, or guitar. Sensors are used on the buttons and keys, such as magnetic reed switches. Sensors are also used on the bellows to transmit the pushing and pulling of the bellows to the sound module. Digital accordions may have features not found in acoustic instruments, such as a piano-style
sustain pedal, a modulation control for changing keys, and a
portamento effect.
As an electronic instrument, these types of accordions are plugged into a
PA system or
keyboard amplifier
A keyboard amplifier is a powered instrument amplifier, electronic amplifier and loudspeaker in a speaker enclosure, speaker cabinet used for the amplification of electronic keyboard instruments. Keyboard amplifiers are distinct from other type ...
to produce sound. Some digital accordions have a small internal speaker and amplifier, so they can be used without a PA system or keyboard amplifier, at least for practicing and small venues like
coffeehouses. One benefit of electronic accordions is that they can be practiced with headphones, making them inaudible to other people nearby. On a digital accordion, the volume of the right-hand keyboard and the left-hand buttons can be independently adjusted.
Acoustic-digital hybrid accordions also exist. They are acoustic accordions (with reeds, bellows, and so on), but they also contain sensors, electronics, and MIDI connections, which provides a wider range of sound options. An acoustic-digital hybrid may be manufactured in this form, or it may be an acoustic accordion which has had aftermarket electronics sensors and connections added. Several companies sell aftermarket electronics kits, but they are typically installed by professional accordion technicians, because of the complex and delicate nature of the internal parts of an accordion.
Unusual accordions
Various hybrid accordions have been created between instruments of different buttonboards and actions. Many remain curiosities – only a few have remained in use:
* The
Schrammel accordion, used in
Viennese chamber music
Chamber music is a form of classical music that is composed for a small group of Musical instrument, instruments—traditionally a group that could fit in a Great chamber, palace chamber or a large room. Most broadly, it includes any art music ...
and
klezmer, which has the treble buttonboard of a chromatic button accordion and a bisonoric bass buttonboard, similar to an expanded diatonic button accordion
* The
Steirische Harmonika, a type of bisonoric diatonic button accordion particular to the Alpine folk music of Slovenia, Austria, the Czech Republic, the German state of Bavaria, and the Italian South Tyrol
* The
schwyzerörgeli or Swiss organ, which usually has a three-row diatonic treble and 18 unisonoric bass buttons in a bass/chord arrangement – a subset of the Stradella system in reverse order like the Belgian bass – that travel parallel to the bellows motion
* The
trikitixa of the
Basque people, which has a two-row diatonic, bisonoric treble and a 12-button diatonic unisonoric bass
* The British chromatic accordion, the favoured diatonic accordion in Scotland. While the right hand is bisonoric, the left hand follows the Stradella system. The elite form of this instrument is generally considered the German manufactured Shand Morino, produced by
Hohner with the input of
Sir Jimmy Shand
* ''Pedal harmony'', a type of accordion used sometimes in Polish folk music, which has a pair of
pump organ-like bellows attached.
* The
Finnish composer and accordionist Veli Kujala developed a ''
quarter tone accordion'' together with the
Italian accordion manufacturer Pigini in
2005
2005 was designated as the International Year for Sport and Physical Education and the International Year of Microcredit. The beginning of 2005 also marked the end of the International Decade of the World's Indigenous Peoples, Internationa ...
, and has written works for it. It deploys the same system as the concert accordion, with a scale of five octaves, each divided into 24 quarter tones. Other notable composers who have written
concerto
A concerto (; plural ''concertos'', or ''concerti'' from the Italian plural) is, from the late Baroque era, mostly understood as an instrumental composition, written for one or more soloists accompanied by an orchestra or other ensemble. The ...
s for the quarter tone accordion include
Jukka Tiensuu and
Sampo Haapamäki.
Manufacturing process
The most expensive accordions are typically fully hand-made, particularly the reeds; completely hand-made reeds have a better tonal quality than even the best automatically manufactured ones. Some accordions have been modified by individuals striving to bring a more pure sound out of low-end instruments, such as the ones improved by Yutaka Usui, a Japanese craftsman.
The manufacture of an accordion is only a partly automated process. In a sense, all accordions are handmade, since there is always some hand assembly of the small parts required. The general process involves making the individual parts, assembling the subsections, assembling the entire instrument, and final decorating and packaging.
Notable centres of production are the Italian cities of
Stradella and
Castelfidardo, with many small and medium size manufacturers especially at the latter. Castelfidardo honours the memory of Paolo Soprani who was one of the first large-scale producers. has built accordions in the French town of
Tulle
Tulle (; ) is a Communes of France, commune in central France. It is the third-largest town in the former region of Limousin and is the capital of the Departments of France, department of Corrèze, in the Regions of France, region of Nouvelle- ...
since 1919, and the company is now the last complete-process manufacturer of accordions in France. German companies such as
Hohner and
Weltmeister made large numbers of accordions, but production diminished by the end of the 20th century. Hohner still manufactures its top-end models in Germany, and ''Weltmeister'' instruments are still handmade by
HARMONA Akkordeon GmbH in
Klingenthal.
Use in various music genres

The accordion has traditionally been used to perform folk or
ethnic music, popular music, and transcriptions from the operatic and light-classical music repertoire. It was also used by the
Kikuyu tribe in
Kenya
Kenya, officially the Republic of Kenya, is a country located in East Africa. With an estimated population of more than 52.4 million as of mid-2024, Kenya is the 27th-most-populous country in the world and the 7th most populous in Africa. ...
and is the main instrument in the traditional Mwomboko
dance
Dance is an The arts, art form, consisting of sequences of body movements with aesthetic and often Symbol, symbolic value, either improvised or purposefully selected. Dance can be categorized and described by its choreography, by its repertoir ...
. Today the instrument is sometimes heard in contemporary pop styles, such as rock and pop-rock, and occasionally even in serious classical music concerts, as well as advertisements.
Use in traditional music

The accordion's popularity spread rapidly: it has mostly been associated with the common people, and was propagated by Europeans who emigrated around the world. The accordion in both button and piano forms became a favorite of folk musicians and has been integrated into
traditional music
Folk music is a music genre that includes traditional folk music and the contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be called world music. Traditional folk music has b ...
styles all over the world: see the
list of music styles that incorporate the accordion.
Use in jazz
Notable jazz accordionists
Early jazz accordionists include Charles Melrose, who recorded ''Wailing Blues/Barrel House Stomp'' (1930, Voc. 1503) with the Cellar Boys; Buster Moten, who played second piano and accordion in the Bennie Moten orchestra; and Jack Cornell, who did recordings with Irving Mills. Later jazz accordionists from the United States include
Steve Bach,
Milton DeLugg,
Orlando DiGirolamo,
Angelo Di Pippo,
[Angelo Di Pippo Biography on angelodipippo.com](_blank)
/ref> Dominic Frontiere, Guy Klucevsek, Yuri Lemeshev, Frank Marocco, Dr. William Schimmel, John Serry Sr., Lee Tomboulian, and Art Van Damme. French jazz accordionists include Richard Galliano
Richard Galliano (born 12 December 1950, Cannes, Alpes-Maritimes) is a French accordionist of Italian heritage. Allmusic biography/ref>
Biography
He was drawn to music at an early age, starting with the accordion at 4, influenced by his father ...
, Bernard Lubat, and Vincent Peirani. Norwegian jazz accordionists include Asmund Bjørken, Stian Carstensen, Gabriel Fliflet, Frode Haltli, and Eivin One Pedersen.
Left hand techniques
The constraints of the Stradella bass system, limiting the left hand to preset chord buttons, is a barrier to some jazz chord conventions. Jazz accordionists expand the range of chord possibilities by using more than one chord button simultaneously, or by using combinations of a chord button and a bass note other than the typical root of the chord. An example of the former technique is used to play a minor seventh chord. To play an Am7(add9) chord, the Am and Em preset buttons are pressed simultaneously, along with an A bassnote. An example of the latter technique is used to play the half-diminished chord. To play an Eø7, a Gm preset button is pressed along with an E bassnote.
For the left hand, the free-bass system is used in jazz as a means of creating complex chord voicings. Jazz harmony that would otherwise be difficult to replicate with the Stradella bass system, such as tritone substitutions, become more accessible using a free-bass accordion.
Use in popular music
The accordion appeared in popular music
Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training.Popular Music. (2015). ''Fun ...
from the 1900s to the 1960s. This half-century is often called the "golden age of the accordion". Five players, Pietro Frosini, the two brothers Count Guido Deiro and Pietro Deiro and Slovenian brothers Vilko Ovsenik and Slavko Avsenik
Slavko Avsenik (November 26, 1929 – July 2, 2015) was a Slovenia, Slovene composer and musician. Beginning in 1953 with the formation of the Avsenik Brothers Ensemble, Avsenik produced more than 1,000 songs and garnered success both in Slovenia ...
, Charles Magnante were major influences at this time.
Most vaudeville
Vaudeville (; ) is a theatrical genre of variety entertainment which began in France in the middle of the 19th century. A ''vaudeville'' was originally a comedy without psychological or moral intentions, based on a comical situation: a drama ...
theaters closed during the Great Depression
The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
, but accordionists during the 1930s–1950s taught and performed for radio. Included among this group was the concert virtuoso John Serry, Sr. During the 1950s through the 1980s the accordion received significant exposure on television with performances by Myron Floren on '' The Lawrence Welk Show''. In the late 1950s and early 1960s, the accordion declined in popularity because of the rise of rock and roll. The first accordionist to appear and perform at the Newport Jazz Festival was Angelo DiPippo. He can be seen playing his accordion in the motion picture ''The Godfather''. He also composed and performed with his accordion on part of the soundtrack of Woody Allen's movie ''To Rome With Love''. He was featured twice on ''The Tonight Show'' with Johnny Carson.
Richard Galliano
Richard Galliano (born 12 December 1950, Cannes, Alpes-Maritimes) is a French accordionist of Italian heritage. Allmusic biography/ref>
Biography
He was drawn to music at an early age, starting with the accordion at 4, influenced by his father ...
is an internationally known accordionist whose repertoire covers jazz, tango nuevo, Latin, and classical. Some popular bands use the instrument to create distinctive sounds. A notable example is Grammy Award–winning parodist "Weird Al" Yankovic
Alfred Matthew "Weird Al" Yankovic ( ; born October 23, 1959) is an American comedy musician, writer, and actor. He is best known for writing and performing Comedy music, comedy songs that often Parody music, parody specific songs by contempo ...
, who plays the accordion on many of his musical tracks, particularly his polkas. Yankovic was trained in the accordion as a child.
The accordion has also been used in the rock genre, most notably by John Linnell of They Might Be Giants
They Might Be Giants, often abbreviated as TMBG, is an American alternative rock and Children's music, children's band formed in 1982 by John Flansburgh and John Linnell. During TMBG's early years, Flansburgh and Linnell frequently performed as ...
, featuring more prominently in the band's earlier works. The instrument is still frequently used during live performances, and continues to make appearances in their studio albums. Accordion is also used in the music of the Dropkick Murphys and Gogol Bordello. Tom Waits
Thomas Alan Waits (born December 7, 1949) is an American musician, composer, songwriter, and actor. His lyrics often focus on society's underworld and are delivered in his trademark deep, gravelly voice. He began in the American folk music, fo ...
used the accordion extensively (often played by Dr. William Schimmel) on his album '' Rain Dogs'' and '' Franks Wild Years''. The folk metal
Folk metal is a fusion genre of heavy metal music and traditional folk music that developed in Europe during the 1990s. It is characterised by the widespread use of folk instruments and, to a lesser extent, traditional singing styles (for example ...
subgenre also employs accordionists, but they are otherwise generally rare in other genres. Full-time accordionists in folk metal seem even rarer, but they are still utilized for studio work, as flexible keyboardists are usually more accessible for live performances. The Finnish symphonic folk-metal band Turisas used to have a full-time accordionist, employing classical and polka sensibilities alongside a violinist. One of their accordionists, Netta Skog, is now a member of Ensiferum
Ensiferum (Latin: , n adj., meaning "sword bearing") is a Finnish folk metal band from Helsinki. The members of the band label themselves as "melodic folk metal".
History Formation, demos and ''Ensiferum'' (1995−2002)
''Ensiferum'' was foun ...
, another folk-metal band. Another Finnish metal band, Korpiklaani
Korpiklaani (Finnish language, Finnish for ) is a Finnish folk metal band from Lahti that was formerly known as Shamaani Duo and Shaman.
History Shamaani Duo
While other folk metal bands began with metal before adding folk music, Korpiklaani st ...
, invokes a type of Finnish polka called humppa, and also has a full-time accordionist. Sarah Kiener, the former hurdy-gurdy
The hurdy-gurdy is a string instrument that produces sound by a hand-turned crank, rosined wheel rubbing against the strings. The wheel functions much like a violin (or nyckelharpa) bow, and single notes played on the instrument sound similar ...
player for the Swiss melodic-death-folk metal band Eluveitie, played a Helvetic accordion known as a ''zugerörgeli''.
Use in classical music
Although best known as a folk instrument, it has grown in popularity among classical composers. The earliest surviving concert piece is ', written in 1836 by Louise Reisner of Paris. Other composers, including the Russian Pyotr Ilyich Tchaikovsky, the Italian Umberto Giordano
Umberto Menotti Maria Giordano (28 August 186712 November 1948) was an Italian composer, mainly of operas. His best-known work in that genre was Andrea Chénier (1896).
He was born in Foggia in Apulia, southern Italy, and studied under Paolo Se ...
, and the American Charles Ives
Charles Edward Ives (; October 20, 1874May 19, 1954) was an American modernist composer, actuary and businessman. Ives was among the earliest renowned American composers to achieve recognition on a global scale. His music was largely ignored d ...
, wrote works for the diatonic button accordion.
The first composer to write specifically for the chromatic accordion was Paul Hindemith
Paul Hindemith ( ; ; 16 November 189528 December 1963) was a German and American composer, music theorist, teacher, violist and conductor. He founded the Amar Quartet in 1921, touring extensively in Europe. As a composer, he became a major advo ...
. In 1922, the Austrian Alban Berg included an accordion in '' Wozzeck'', Op. 7. In 1937, the first accordion concerto was composed in Russia. Other notable composers have written for the accordion during the first half of the 20th century. Included among this group was the Italian-American John Serry Sr., whose '' Concerto for Free Bass Accordion'' was completed in 1964. In addition, the American accordionist Robert Davine composed his ''Divertimento for Flute, Clarinet, Bassoon and Accordion'' as a work for chamber orchestra. American composer William P. Perry featured the accordion in his orchestral suite ''Six Title Themes in Search of a Movie'' (2008). The experimental composer Howard Skempton began his musical career as an accordionist, and has written numerous solo works for it. In his work ''Drang'' (1999), British composer John Palmer pushed the expressive possibilities of the accordion/bayan. Luciano Berio wrote ''Sequenza XIII'' (1995) for accordionist Teodoro Anzellotti. Accordionists like Mogens Ellegaard, Joseph Macerollo, Nick Ariondo, Friedrich Lips, Hugo Noth, Dr. William Schimmel (also a composer), Stefan Hussong, Teodoro Anzellotti, and Geir Draugsvoll, encouraged composers to write new music for the accordion (solo and chamber music) and also started playing baroque music on the free bass accordion.
French composer Henri Dutilleux used an accordion in both his late song cycles ''Correspondences'' (2003) and '' Le Temps L'Horloge'' (2009). Russian-born composer Sofia Gubaidulina has composed solos, concertos, and chamber works for accordion. Astor Piazzolla's concert tangos are performed widely. Piazzolla performed on the bandoneon, but his works are also performed on or accordion. Dr. William schimmel and "The Tango Project" recorded a number of hit recordings and appeared in the movie '' Scent of a Woman'' with Al Pacino which earned Pacino an Oscar. Their recordings were used in many films.
Australia
The earliest mention of the novel accordion instrument in Australian music occurs in the 1830s.
The accordion initially competed against cheaper and more convenient reed instruments such as mouth organ, concertina and melodeon.
Frank Fracchia was an Australian accordion composer and copies of his works "My dear, can you come out tonight" and "Dancing with you" are preserved in Australian libraries.
Other Australian composers who arranged music for accordion include Reginald Stoneham.
The popularity of the accordion peaked in the late 1930s and continued until the 1950s.
The accordion was particularly favoured by buskers.
Bosnia and Herzegovina
The accordion is a traditional instrument in Bosnia and Herzegovina
Bosnia and Herzegovina, sometimes known as Bosnia-Herzegovina and informally as Bosnia, is a country in Southeast Europe. Situated on the Balkans, Balkan Peninsula, it borders Serbia to the east, Montenegro to the southeast, and Croatia to th ...
. It is the dominant instrument used in sevdalinka, a traditional genre of folk music from Bosnia and Herzegovina.
Brazil
The accordion was brought to Brazil by settlers and immigrants from Europe, especially from Italy and Germany, who mainly settled in the south (Rio Grande do Sul, Santa Catarina and Paraná). The first instrument brought was a "Concertina" (a 120 button chromatic accordion). The instrument was popular in the 1950s, and it was common to find several accordions in the same house. There are many different configurations and tunes which were adapted from the cultures that came from Europe.
Accordion is the official symbol instrument of the Rio Grande do Sul state, where it was voted by unanimity in the deputy chamber.
During the boom of accordions there were around 65 factories in Brazil, where most of them (52) in the south, in Rio Grande do Sul state, with only 7 outside the south. One of the most famous and genuinely Brazilian brands was Accordeões Todeschini from Bento Gonçalves-RS, closed in 1973. The Todeschini accordion is very appreciated today and survives with very few maintainers. The most notable musicians of button accordions are Renato Borghetti, Adelar Bertussi, Albino Manique and Edson Dutra.
Compared to many other countries, the instrument is very popular in mainstream pop music. In some parts of the country, such as the northeast it is the most popular melodic instrument. As opposed to most European folk accordions, a very dry tuning is usually used in Brazil. Outside the south, the accordion (predominantly the piano accordion) is used in almost all styles of Forró (in particular in the subgenres of Xote and Baião) as the principal instrument, Luiz Gonzaga (the "King of the Baião") and Dominguinhos being among the notable musicians in this style from the northeast. In this musical style the typical combination is a trio of accordion, triangle
A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called ''vertices'', are zero-dimensional points while the sides connecting them, also called ''edges'', are one-dimension ...
and zabumba (a type of drum).
This style has gained popularity recently, in particular among the student population of the southeast of the country (in the Forró Universitário genre, with important exponents today being Falamansa, and trios such as Trio Dona Zefa, Trio Virgulino and Trio Alvorada). Moreover, the accordion is the principal instrument in Junina music (music of the São João Festival), with Mario Zan having been a very important exponent of this music. It is an important instrument in Sertanejo (and Caipira) music, which originated in the midwest and southeast of Brazil, and subsequently has gained popularity throughout the country.
China
The number of accordionists in China exceeds every other country in the world, and possibly every country combined. Introduced in 1926, the accordion has risen to popularity in China throughout the years, thanks to Russian teachers and its being a popular instrument in the People's Liberation Army
The People's Liberation Army (PLA) is the military of the Chinese Communist Party (CCP) and the People's Republic of China (PRC). It consists of four Military branch, services—People's Liberation Army Ground Force, Ground Force, People's ...
, and remains popular.
In the late 20th century, the development of high performance standards for the accordion within China's halls of academe was also influenced by several American virtuosos including Robert Davine, who was invited by the Ministry of Culture of the People's Republic to present Master Classes and to broaden its national program of music for the accordion in 1984.
Colombia
The accordion is also a traditional instrument in Colombia, commonly associated with the vallenato and cumbia genres. The accordion has been used by tropipop musicians such as Carlos Vives, Andrés Cabas, Fonseca (singer) and Bacilos, as well as rock musicians such as Juanes and pop musicians as Shakira
Shakira Isabel Mebarak Ripoll ( , ; born 2 February 1977) is a Colombian singer-songwriter. Referred to as the "Honorific nicknames in popular music, Queen of Latin Music", she has had a Cultural impact of Shakira, significant impact on the ...
. Vallenato, who emerged in the early twentieth century in Valledupar, and have come to symbolize the folk music of Colombia.
Every year in April, Colombia holds one of the most important musical festivals in the country: the Vallenato Legend Festival. The festival holds contests for best accordion player. Once every decade, the "King of Kings" accordion competition takes place, where winners of the previous festivals compete for the highest possible award for a vallenato accordion player: the ''Pilonera Mayor'' prize. This is the world's largest competitive accordion festival.
Czech Republic
Accordion is often played at traditional Czech pubs, such as U Flekú, Prague.
Mexico
Norteño heavily relies on the accordion; it is a genre related to polka. Ramón Ayala, known in Mexico as the "King of the Accordion", is a norteño musician. Cumbia, which features the accordion, is also popular with musicians such as Celso Piña, creating a more contemporary style. U.S.-born Mexican musician Julieta Venegas incorporates the sound of the instrument into rock, pop and folk. She was influenced by her fellow Chicanos Los Lobos who also use the music of the accordion.
North Korea
According to Barbara Demick in '' Nothing to Envy'', the accordion is known as "the people's instrument" and all North Korean teachers were expected to learn the accordion.
United States
Accordions are played in Tejano music, Cajun and Creole music, zydeco, klezmer, and polka.
During the post-World War II era from the 1940s to the 1960s, accordions were widely used in the United States for performances of traditional Western 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 ...
within the configuration of large free-reed symphonic orchestras both in live performances on the concert hall stage and in phonograph recordings. Included among the leading accordion orchestras were: The New York Accordion Symphony in New York City, The Springfield Accordion Orchestra in Massachusetts, The Houston Accordion Symphony in Houston, Texas and The Philadelphia Accordion Orchestra in Philadelphia, Pennsylvania. Prominent orchestra members included: Joe Biviano (President of the American Accordionists Association) Carmen Carrozza, Orlando Di Girolamo (President of the American Symphony Society), Tony Mecca (who collaborated with Leonard Bernstein), Angelo Di Pippo (jazz accordionist and arranger for Robert Merrill), John Serry Sr. and Alfonso Veltri (Director of the National Conservatory of Music). By the 1960s recordings by such orchestras were even praised for their high level of musicality in ''The Billboard'' magazine.''American Music'' - "Searching for the Rockordion: The Changing Image of the Accordion in America". Jacobson, Marion S. University of Illinois Press Vol. 25, No. 2 (Sommer 2007) pp.216-247, See pp. 220-225 on https://www.jstor.org/stable/40071656
/ref>
Other audio samples
See also
* List of accordionists
* Steirische Harmonika
* Confédération internationale des accordéonistes
Notes
References
External links
*
{{Authority control
Folk music instruments
Articles containing video clips
German inventions
19th-century inventions
Symbols of Rio Grande do Sul