
An electronic musical instrument or electrophone is a
musical instrument
A musical instrument is a device created or adapted to make 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 who pl ...
that produces sound using
electronic circuitry
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow. It is a type of electrica ...
. Such an instrument sounds by outputting an electrical, electronic or digital
audio signal
An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals, or a series of binary numbers for digital signals. Audio signals have frequencies in the audio frequency range of ro ...
that ultimately is plugged into a
power amplifier which drives a
loudspeaker
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or ...
, creating the sound heard by the performer and listener.
An electronic instrument might include a
user interface
In the industrial design field of human–computer interaction, a user interface (UI) is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine f ...
for controlling its sound, often by adjusting the
pitch,
frequency
Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from '' angular frequency''. Frequency is measured in hertz (Hz) which is ...
, or duration of each
note
Note, notes, or NOTE may refer to:
Music and entertainment
* Musical note, a pitched sound (or a symbol for a sound) in music
* Notes (album), ''Notes'' (album), a 1987 album by Paul Bley and Paul Motian
* ''Notes'', a common (yet unofficial) sho ...
. A common user interface is the
musical keyboard
A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, s ...
, which functions similarly to the keyboard on an acoustic
piano
The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a musica ...
, except that with an electronic keyboard, the keyboard itself does not make any sound. An electronic keyboard sends a signal to a
synth module
A sound module is an electronic musical instrument without a human-playable interface such as a piano-style musical keyboard. Sound modules have to be operated using an externally connected device, which is often a MIDI controller, of which ...
,
computer or other electronic or digital sound generator, which then creates a sound. However, it is increasingly common to separate user interface and sound-generating functions into a
music controller
A MIDI controller is any hardware or software that generates and transmits Musical Instrument Digital Interface (MIDI) data to MIDI-enabled devices, typically to trigger sounds and control parameters of an electronic music performance. They mos ...
(
input device
In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, cameras ...
) and a
music synthesizer, respectively, with the two devices communicating through a musical performance description language such as
MIDI
MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, an ...
or
Open Sound Control
Open Sound Control (OSC) is a protocol for networking sound synthesizers, computers, and other multimedia devices for purposes such as musical performance or show control. OSC's advantages include interoperability, accuracy, flexibility and enh ...
.
All electronic musical instruments can be viewed as a subset of
audio signal processing
Audio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals. Audio signals are electronic representations of sound waves— longitudinal waves which travel through air, consist ...
applications. Simple electronic musical instruments are sometimes called
sound effect
A sound effect (or audio effect) is an artificially created or enhanced sound, or sound process used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media. Traditi ...
s; the border between sound effects and actual musical instruments is often unclear.
In the 21st century, electronic musical instruments are now widely used in most styles of music. In popular music styles such as
electronic dance music, almost all of the instrument sounds used in recordings are electronic instruments (e.g.,
bass synth
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and ...
,
synthesizer
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis ...
,
drum machine). Development of new electronic musical instruments, controllers, and synthesizers continues to be a highly active and interdisciplinary field of research. Specialized conferences, notably the International Conference on
New Interfaces for Musical Expression
New Interfaces for Musical Expression, also known as NIME, is an international conference dedicated to scientific research on the development of new technologies and their role in musical expression and artistic performance.
History
The confere ...
, have organized to report cutting-edge work, as well as to provide a showcase for artists who perform or create music with new electronic music instruments, controllers, and synthesizers.
Classification
In musicology, electronic musical instruments are known as electrophones. Electrophones are the fifth category of musical instrument under the
Hornbostel-Sachs system. Musicologists typically only classify music as electrophones if the sound is initially produced by electricity, excluding electronically controlled acoustic instruments such as
pipe organ
The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''rank ...
s and
amplified instruments such as
electric guitar
An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gu ...
s.
The category was added to the
Hornbostel-Sachs musical instrument classification system by
Sachs Sachs is a German surname, meaning "man from Saxony". Sachs is a common surname among Ashkenazi Jews from Saxony, in the United States sometimes adopted in the variant Zaks, supposedly in reference to the Hebrew phrase ''Zera Kodesh Shemo'' (ZaKS), ...
in 1940, in his 1940 book ''The History of Musical Instruments''; the original 1914 version of the system did not include it. Sachs divided electrophones into three subcategories:
* 51=electrically
actuated acoustic instrument
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 ad ...
s (e.g.,
pipe organ
The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''rank ...
with electronic
tracker action
Tracker action is a term used in reference to pipe organs and steam calliopes to indicate a mechanical linkage between keys or pedals pressed by the organist and the valve that allows air to flow into pipe(s) of the corresponding note. This is ...
)
* 52=electrically
amplified acoustic instruments (e.g.,
acoustic guitar
An acoustic guitar is a musical instrument in the string family. When a string is plucked its vibration is transmitted from the bridge, resonating throughout the top of the guitar. It is also transmitted to the side and back of the instrument, ...
with
pickup)
* 53=instruments which make sound primarily by way of electrically driven
oscillators
The last category included instruments such as
theremin
The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
s or
synthesizer
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis ...
s, which he called
radioelectric instruments.
Francis William Galpin
Francis William Galpin (December 25, 1858 December 30, 1945) was an English cleric and antiquarian musicologist. He was known as a collector of old musical instruments.
Life
Born in Dorchester, Dorset, Galpin was educated at Sherborne and Trini ...
provided such a group in his own classification system, which is closer to
Mahillon than Sachs-Hornbostel. For example, in Galpin's 1937 book ''A Textbook of European Musical Instruments'', he lists electrophones with three second-level divisions for sound generation ("by oscillation," "electro-magnetic," and "electro-static"), as well as third-level and fourth-level categories based on the control method.
Present-day
ethnomusicologists
Ethnomusicology is the study of music from the cultural and social aspects of the people who make it. It encompasses distinct theoretical and methodical approaches that emphasize cultural, social, material, cognitive, biological, and other dim ...
, such as
Margaret Kartomi and Terry Ellingson, suggest that, in keeping with the spirit of the original Hornbostel Sachs classification scheme, if one categorizes instruments by what first produces the initial sound in the instrument, that only subcategory 53 should remain in the electrophones category. Thus, it has been more recently proposed, for example, that the pipe organ (even if it uses electric
key action to control
solenoid valve
A solenoid valve is an electromechanically operated valve.
Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the ...
s) remain in the
aerophone
An aerophone () is a musical instrument that produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes (which are respectively chordophones and membranophones), and without the vibration of the instru ...
s category, and that the
electric guitar
An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gu ...
remain in the
chordophone
String instruments, stringed instruments, or chordophones are musical instruments that produce sound from vibrating strings when a performer plays or sounds the strings in some manner.
Musicians play some string instruments by plucking the s ...
s category, and so on.
Early examples
In the 18th-century, musicians and composers adapted a number of acoustic instruments to exploit the novelty of electricity. Thus, in the broadest sense, the first electrified musical instrument was the
Denis d'or keyboard, dating from 1753, followed shortly by the
clavecin électrique
The clavecin électrique (or clavessin électrique) was a musical instrument invented in 1759 by Jean-Baptiste Thillaie Delaborde, a French Jesuit priest. It is the earliest surviving electric-powered musical instrument, antedated only by the Den ...
by the Frenchman Jean-Baptiste de Laborde in 1761. The Denis d'or consisted of a keyboard instrument of over 700 strings, electrified temporarily to enhance sonic qualities. The clavecin électrique was a keyboard instrument with
plectra
A plectrum is a small flat tool used for plucking or strumming of a stringed instrument. For hand-held instruments such as guitars and mandolins, the plectrum is often called a pick and is held as a separate tool in the player's hand. In harps ...
(picks) activated electrically. However, neither instrument used electricity as a sound-source.
The first electric synthesizer was invented in 1876 by
Elisha Gray
Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company. Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois ...
.
The "Musical Telegraph" was a chance by-product of his telephone technology when Gray discovered that he could control sound from a self-vibrating electromagnetic circuit and so invented a basic
oscillator. The Musical Telegraph used steel reeds oscillated by electromagnets and transmitted over a telephone line. Gray also built a simple loudspeaker device into later models, which consisted of a diaphragm vibrating in a magnetic field.
A significant invention, which later had a profound effect on electronic music, was the
audion
The Audion was an electronic detecting or amplifying vacuum tube invented by American electrical engineer Lee de Forest in 1906.De Forest patented a number of variations of his detector tubes starting in 1906. The patent that most clearly covers ...
in 1906. This was the first thermionic valve, or
vacuum tube
A vacuum tube, electron tube, 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.
The type kn ...
and which led to the generation and amplification of electrical signals, radio broadcasting, and electronic computation, among other things. Other early synthesizers included the
Telharmonium
The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897.
, filed 1896-02-04.
The electrical signal from the Telharmonium was transmitted over wires; it was hear ...
(1897), the
Theremin
The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
(1919), Jörg Mager's
Spharophon (1924) and Partiturophone, Taubmann's similar
Electronde
The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
(1933),
Maurice Martenot
Maurice Louis Eugène Martenot (; October 14, 1898 – October 8, 1980) was a French cellist, a radio telegrapher during the first World War, and an inventor.
Born in Paris, he is best known for his invention of the ondes Martenot, an instrument ...
's
ondes Martenot
The ondes Martenot ( ; , "Martenot waves") or ondes musicales ("musical waves") is an early electronic musical instrument. It is played with a keyboard or by moving a ring along a wire, creating "wavering" sounds similar to a theremin. A playe ...
("Martenot waves", 1928), Trautwein's
Trautonium
The Trautonium is an electronic synthesizer invented in 1930 by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle. Soon afterwards Oskar Sala joined him, continuing development until Sala's dea ...
(1930). The Mellertion (1933) used a non-standard scale, Bertrand's Dynaphone could produce octaves and perfect fifths, while the Emicon was an American, keyboard-controlled instrument constructed in 1930 and the German Hellertion combined four instruments to produce chords. Three Russian instruments also appeared, Oubouhof's
Croix Sonore
The Croix Sonore is an early electronic musical instrument with continuous pitch, similar to the theremin. Like the theremin, the pitch of the tone is dependent on the nearness of the player's arm to an antenna; unlike the theremin, the antenna was ...
(1934),
Ivor Darreg's
microtonal
Microtonal music or microtonality is the use in music of microtones— intervals smaller than a semitone, also called "microintervals". It may also be extended to include any music using intervals not found in the customary Western tuning of t ...
'Electronic Keyboard Oboe' (1937) and the
ANS synthesizer
The ANS synthesizer is a photoelectronic musical instrument created by Russian engineer Evgeny Murzin from 1937 to 1957. The technological basis of his invention was the method of graphical sound recording used in cinematography (developed in Ru ...
, constructed by the Russian scientist
Evgeny Murzin
Yevgeny Murzin (russian: Евгений Мурзин; 1914–1970) was a Russian audio engineer and inventor of the ANS synthesizer.
Murzin's synthesizer
In 1938, invented a design for composers based on synthesizing complex musical sounds fr ...
from 1937 to 1958. Only two models of this latter were built and the only surviving example is currently stored at the Lomonosov University in
Moscow
Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
. It has been used in many Russian movies—like ''
Solaris''—to produce unusual, "cosmic" sounds.
Hugh Le Caine
Hugh Le Caine (May 27, 1914 – July 3, 1977) was a Canadian physicist, composer, and instrument builder.
Le Caine was brought up in Port Arthur (now Thunder Bay) in northwestern Ontario. At a young age, he began making musical instruments. In y ...
, John Hanert,
Raymond Scott
Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments.
Though Scott never scored cartoon soundtracks, his music is ...
, composer
Percy Grainger
Percy Aldridge Grainger (born George Percy Grainger; 8 July 188220 February 1961) was an Australian-born composer, arranger and pianist who lived in the United States from 1914 and became an American citizen in 1918. In the course of a long an ...
(with Burnett Cross), and others built a variety of automated electronic-music controllers during the late 1940s and 1950s. In 1959
Daphne Oram
Daphne Blake Oram (31 December 1925 – 5 January 2003) was a British composer and electronic musician. She was one of the first British composers to produce electronic sound, and was an early practitioner of musique concrète in the UK. As a co ...
produced a novel method of synthesis, her "
Oramics
__NOTOC__
Oramics is a drawn sound technique designed in 1957 by musician Daphne Oram. The machine was further developed in 1962 after receiving a grant from the Gulbenkian Foundation. The technique involves drawing on 35mm film strips to ...
" technique, driven by drawings on a 35 mm film strip; it was used for a number of years at the
BBC Radiophonic Workshop
The BBC Radiophonic Workshop was one of the sound effects units of the BBC, created in 1958 to produce incidental sounds and new music for radio and, later, television. The unit is known for its experimental and pioneering work in electron ...
. This workshop was also responsible for the theme to the TV series ''
Doctor Who'' a piece, largely created by
Delia Derbyshire
Delia Ann Derbyshire (5 May 1937 – 3 July 2001) was an English musician and composer of electronic music. She carried out notable work with the BBC Radiophonic Workshop during the 1960s, including her electronic arrangement of the them ...
, that more than any other ensured the popularity of electronic music in the UK.
Telharmonium
In 1897
Thaddeus Cahill
Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium.
He studied the p ...
patented an instrument called the Telharmonium (or Teleharmonium, also known as the Dynamaphone). Using
tonewheel
A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond Organ and in telephony to generate audible signals such as Ringing tone. I ...
s to generate musical sounds as electrical signals by
additive synthesis
Additive synthesis is a sound synthesis technique that creates timbre by adding sine waves together.
The timbre of musical instruments can be considered in the light of Fourier theory to consist of multiple harmonic or inharmonic '' partials'' ...
, it was capable of producing any combination of notes and overtones, at any dynamic level. This technology was later used to design the
Hammond organ
The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, Hammond organs ...
. Between 1901 and 1910 Cahill had three progressively larger and more complex versions made, the first weighing seven tons, the last in excess of 200 tons. Portability was managed only by rail and with the use of thirty boxcars. By 1912, public interest had waned, and Cahill's enterprise was bankrupt.
Theremin
Another development, which aroused the interest of many composers, occurred in 1919–1920. In Leningrad,
Leon Theremin
Leon Theremin (born Lev Sergeyevich Termen rus, Лев Сергеевич Термéн, p=ˈlʲef sʲɪrˈɡʲejɪvʲɪtɕ tɨrˈmʲen; – 3 November 1993) was a Russian and Soviet inventor, most famous for his invention of the theremin, one o ...
built and demonstrated his Etherophone, which was later renamed the
Theremin
The theremin (; originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the performer (who is known as a thereminist). It is named afte ...
. This led to the first compositions for electronic instruments, as opposed to noisemakers and re-purposed machines. The Theremin was notable for being the first musical instrument played without touching it. In 1929,
Joseph Schillinger
Joseph Moiseyevich Schillinger ( Russian: Иосиф Моисеевич Шиллингер, (other sources: ) – 23 March 1943) was a composer, music theorist, and composition teacher who originated the Schillinger System of Musical Composit ...
composed ''First Airphonic Suite for Theremin and Orchestra'', premièred with the
Cleveland Orchestra
The Cleveland Orchestra, based in Cleveland, is one of the five American orchestras informally referred to as the " Big Five". Founded in 1918 by the pianist and impresario Adella Prentiss Hughes, the orchestra plays most of its concerts at Seve ...
with
Leon Theremin
Leon Theremin (born Lev Sergeyevich Termen rus, Лев Сергеевич Термéн, p=ˈlʲef sʲɪrˈɡʲejɪvʲɪtɕ tɨrˈmʲen; – 3 November 1993) was a Russian and Soviet inventor, most famous for his invention of the theremin, one o ...
as soloist. The next year
Henry Cowell
Henry Dixon Cowell (; March 11, 1897 – December 10, 1965) was an American composer, writer, pianist, publisher and teacher. Marchioni, Tonimarie (2012)"Henry Cowell: A Life Stranger Than Fiction" ''The Juilliard Journal''. Retrieved 19 June 20 ...
commissioned Theremin to create the first electronic rhythm machine, called the
Rhythmicon. Cowell wrote some compositions for it, which he and Schillinger premiered in 1932.
Ondes Martenot
The 1920s have been called the apex of the Mechanical Age and the dawning of the Electrical Age. In 1922, in Paris,
Darius Milhaud
Darius Milhaud (; 4 September 1892 – 22 June 1974) was a French composer, conductor, and teacher. He was a member of Les Six—also known as ''The Group of Six''—and one of the most prolific composers of the 20th century. His compositions ...
began experiments with "vocal transformation by phonograph speed change."
[Herbert Russcol, ''The Liberation of Sound: An Introduction to Electronic Music'' ( Englewood Cliffs, New Jersey: Prentice-Hall, 1972): 68.] These continued until 1927. This decade brought a wealth of early electronic instruments—along with the Theremin, there is the presentation of the
Ondes Martenot
The ondes Martenot ( ; , "Martenot waves") or ondes musicales ("musical waves") is an early electronic musical instrument. It is played with a keyboard or by moving a ring along a wire, creating "wavering" sounds similar to a theremin. A playe ...
, which was designed to reproduce the microtonal sounds found in Hindu music, and the
Trautonium
The Trautonium is an electronic synthesizer invented in 1930 by Friedrich Trautwein in Berlin at the Musikhochschule's music and radio lab, the Rundfunkversuchstelle. Soon afterwards Oskar Sala joined him, continuing development until Sala's dea ...
.
Maurice Martenot invented the Ondes Martenot in 1928, and soon demonstrated it in Paris. Composers using the instrument ultimately include
Boulez
Pierre Louis Joseph Boulez (; 26 March 1925 – 5 January 2016) was a French composer, conductor and writer, and the founder of several musical institutions. He was one of the dominant figures of post-war Western classical music.
Born in Mon ...
,
Honegger
Arthur Honegger (; 10 March 1892 – 27 November 1955) was a Swiss composer who was born in France and lived a large part of his life in Paris. A member of Les Six, his best known work is probably '' Antigone'', composed between 1924 and 1927 ...
,
Jolivet,
Koechlin,
Messiaen
Olivier Eugène Prosper Charles Messiaen (, ; ; 10 December 1908 – 27 April 1992) was a French composer, organist, and ornithologist who was one of the major composers of the 20th century. His music is rhythmically complex; harmonical ...
,
Milhaud,
Tremblay, and
Varèse.
Radiohead guitarist and multi-instrumentalist
Jonny Greenwood
Jonathan Richard Guy Greenwood (born 5 November 1971) is an English musician and composer. He is the lead guitarist and keyboardist of the alternative rock band Radiohead, and has written numerous film scores.
Along with his elder brother, t ...
also uses it in his compositions and a plethora of Radiohead songs. In 1937, Messiaen wrote ''Fête des belles eaux'' for 6 ondes Martenot, and wrote solo parts for it in ''
Trois petites Liturgies de la Présence Divine'' (1943–44) and the ''
Turangalîla-Symphonie
The ''Turangalîla-Symphonie'' is the only symphony by Olivier Messiaen (1908–1992). It was written for an orchestra of large forces from 1946 to 1948 on a commission by Serge Koussevitzky in his wife's memory for the Boston Symphony Orchestr ...
'' (1946–48/90).
Trautonium
The Trautonium was invented in 1928. It was based on the
subharmonic
In music, the undertone series or subharmonic series is a sequence of notes that results from inverting the intervals of the overtone series. While overtones naturally occur with the physical production of music on instruments, undertones must ...
scale, and the resulting sounds were often used to emulate bell or gong sounds, as in the 1950s Bayreuth productions of ''
Parsifal
''Parsifal'' ( WWV 111) is an opera or a music drama in three acts by the German composer Richard Wagner and his last composition. Wagner's own libretto for the work is loosely based on the 13th-century Middle High German epic poem '' Parziv ...
''. In 1942, Richard Strauss used it for the bell- and gong-part in the Dresden première of his ''Japanese Festival Music''. This new class of instruments, microtonal by nature, was only adopted slowly by composers at first, but by the early 1930s there was a burst of new works incorporating these and other electronic instruments.
Hammond organ and Novachord
In 1929
Laurens Hammond
Laurens Hammond (January 11, 1895 – July 1, 1973), was an American engineer and inventor. His inventions include the Hammond organ, the Hammond clock, and the world's first polyphonic musical synthesizer, the Novachord.
Youth
Laurens ...
established his company for the manufacture of electronic instruments. He went on to produce the
Hammond organ
The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, Hammond organs ...
, which was based on the principles of the
Telharmonium
The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897.
, filed 1896-02-04.
The electrical signal from the Telharmonium was transmitted over wires; it was hear ...
, along with other developments including early reverberation units. The Hammond organ is an electromechanical instrument, as it used both mechanical elements and electronic parts. A Hammond organ used spinning metal tonewheels to produce different sounds. A
magnetic pickup similar in design to the pickups in an
electric guitar
An electric guitar is a guitar that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a semi-acoustic guitar and an electric acoustic gu ...
is used to transmit the pitches in the tonewheels to an amplifier and speaker enclosure. While the Hammond organ was designed to be a lower-cost alternative to a
pipe organ
The pipe organ is a musical instrument that produces sound by driving pressurized air (called ''wind'') through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ''rank ...
for church music, musicians soon discovered that the Hammond was an excellent instrument for
blues and
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, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a majo ...
; indeed, an entire genre of music developed built around this instrument, known as the
organ trio (typically Hammond organ, drums, and a third instrument, either saxophone or guitar).
The first commercially manufactured synthesizer was the
Novachord
The Novachord is an electronic musical instrument often considered the world's first commercial polyphonic synthesizer. All-electronic, incorporating many circuit and control elements found in modern synthesizers, and using subtractive synthes ...
, built by the
Hammond Organ
The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding #Drawbars, drawbars to vary sounds. Until 1975, Hammond organs ...
Company from 1938 to 1942, which offered 72-note
polyphony
Polyphony ( ) is a type of musical texture (music), texture consisting of two or more simultaneous lines of independent melody, as opposed to a musical texture with just one voice, monophony, or a texture with one dominant melodic voice accompan ...
using 12 oscillators driving monostable-based divide-down circuits, basic envelope generator, envelope control and resonant low-pass filters. The instrument featured 163 vacuum tubes and weighed 500 pounds. The instrument's use of envelope control is significant, since this is perhaps the most significant distinction between the modern synthesizer and other electronic instruments.
Analogue synthesis 1950–1980
The most commonly used electronic instruments are
synthesizer
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis ...
s, so-called because they artificially generate sound using a variety of techniques. All early circuit-based synthesis involved the use of analogue circuitry, particularly voltage controlled amplifiers, oscillators and filters. An important technological development was the invention of the Clavivox
synthesizer
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis ...
in 1956 by
Raymond Scott
Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments.
Though Scott never scored cartoon soundtracks, his music is ...
with subassembly by Robert Moog. French composer and engineer Edgard Varèse created a variety of compositions using electronic horns, whistles, and tape. Most notably, he wrote ''Poème électronique'' for the Phillips pavilion at the Expo '58, Brussels World Fair in 1958.
Modular synthesizers
RCA produced experimental devices to synthesize voice and music in the 1950s. The RCA Mark II Sound Synthesizer, Mark II Music Synthesizer, housed at the Computer Music Center, Columbia-Princeton Electronic Music Center in New York City. Designed by Herbert Belar and Harry Olson at RCA, with contributions from Vladimir Ussachevsky and Peter Mauzey, it was installed at Columbia University in 1957. Consisting of a room-sized array of interconnected sound synthesis components, it was only capable of producing music by programming,
using a paper tape Music sequencer, sequencer punched with holes to control pitch sources and filters, similar to a mechanical player piano but capable of generating a wide variety of sounds. The
vacuum tube
A vacuum tube, electron tube, 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.
The type kn ...
system had to be patched to create timbres.
In the 1960s synthesizers were still usually confined to studios due to their size. They were usually modular in design, their stand-alone signal sources and processors connected with patch cords or by other means and controlled by a common controlling device. Harald Bode, Don Buchla,
Hugh Le Caine
Hugh Le Caine (May 27, 1914 – July 3, 1977) was a Canadian physicist, composer, and instrument builder.
Le Caine was brought up in Port Arthur (now Thunder Bay) in northwestern Ontario. At a young age, he began making musical instruments. In y ...
,
Raymond Scott
Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments.
Though Scott never scored cartoon soundtracks, his music is ...
and Paul Ketoff were among the first to build such instruments, in the late 1950s and early 1960s. Buchla later produced a commercial modular synthesizer, the Buchla, Buchla Music Easel. Robert Moog, who had been a student of Peter Mauzey and one of the RCA Mark II engineers, created a synthesizer that could reasonably be used by musicians, designing the circuits while he was at Columbia-Princeton. The Moog modular synthesizer, Moog synthesizer was first displayed at the Audio Engineering Society convention in 1964. It required experience to set up sounds but was smaller and more intuitive than what had come before, less like a machine and more like a musical instrument. Moog established standards for control interfacing, using a logarithmic 1-volt-per-octave for pitch control and a separate triggering signal. This standardization allowed synthesizers from different manufacturers to operate simultaneously. Pitch control was usually performed either with an organ-style keyboard or a music sequencer producing a timed series of control voltages. During the late 1960s hundreds of popular recordings used Moog synthesizers. Other early commercial synthesizer manufacturers included ARP Instruments, Inc., ARP, who also started with modular synthesizers before producing all-in-one instruments, and British firm Electronic Music Studios (London) Ltd, EMS.
Integrated synthesizers
In 1970, Moog designed the Minimoog, a non-modular synthesizer with a built-in keyboard. The analogue circuits were interconnected with switches in a simplified arrangement called "normalization." Though less flexible than a modular design, normalization made the instrument more portable and easier to use. The Minimoog sold 12,000 units. Further standardized the design of subsequent synthesizers with its integrated keyboard, pitch and modulation wheels and VCO->VCF->VCA signal flow. It has become celebrated for its "fat" sound—and its tuning problems. Miniaturized solid-state components allowed synthesizers to become self-contained, portable instruments that soon appeared in live performance and quickly became widely used in popular music and electronic art music.
Polyphony
Many early analog synthesizers were monophonic, producing only one tone at a time. Popular monophonic synthesizers include the Moog Minimoog. A few, such as the Moog Sonic Six, ARP Odyssey and EML 101, could produce two different pitches at a time when two keys were pressed. Polyphony (instrument), Polyphony (multiple simultaneous tones, which enables Chord (music), chords) was only obtainable with electronic organ designs at first. Popular electronic keyboards combining organ circuits with synthesizer processing included the ARP Omni and Moog's Polymoog and Opus 3.
By 1976 affordable polyphonic synthesizers began to appear, notably the Yamaha CS-50, CS-60 and Yamaha CS-80, CS-80, the Sequential Circuits Prophet-5 and the Oberheim Four-Voice. These remained complex, heavy and relatively costly. The recording of settings in digital memory allowed storage and recall of sounds. The first practical polyphonic synth, and the first to use a microprocessor as a controller, was the Sequential Circuits Prophet-5 introduced in late 1977. For the first time, musicians had a practical polyphonic synthesizer that could save all knob settings in computer memory and recall them at the touch of a button. The Prophet-5's design paradigm became a new standard, slowly pushing out more complex and recondite modular designs.
Tape recording
In 1935, another significant development was made in Germany. Allgemeine Elektricitäts Gesellschaft (AEG) demonstrated the first commercially produced magnetic tape recorder, called the ''Magnetophon''. Magnetic tape sound recording, Audio tape, which had the advantage of being fairly light as well as having good audio fidelity, ultimately replaced the bulkier wire recorders.
The term "electronic music" (which first came into use during the 1930s) came to include the tape recorder as an essential element: "electronically produced sounds recorded on tape and arranged by the composer to form a musical composition". It was also indispensable to Musique concrète.
Tape also gave rise to the first, analogue, sample-playback keyboards, the Chamberlin and its more famous successor the Mellotron, an electro-mechanical, polyphonic keyboard originally developed and built in Birmingham, England in the early 1960s.
Sound sequencer
During the 1940s–1960s,
Raymond Scott
Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments.
Though Scott never scored cartoon soundtracks, his music is ...
, an American composer of electronic music, invented various kind of music sequencers for his electric compositions. Step sequencers played rigid patterns of notes using a grid of (usually) 16 buttons, or steps, each step being 1/16 of a bar (music), measure. These patterns of notes were then chained together to form longer compositions. Software sequencers were continuously utilized since the 1950s in the context of computer music, including computer-''played'' music (software sequencer), computer-''composed'' music (algorithmic music, music synthesis), and computer ''sound generation'' (sound synthesis).
Digital era 1980–2000
Digital synthesis
The first digital synthesizers were academic experiments in sound synthesis using digital computers. Frequency modulation synthesis, FM synthesis was developed for this purpose; as a way of generating complex sounds digitally with the smallest number of computational operations per sound sample. In 1983 Yamaha Corporation, Yamaha introduced the first stand-alone digital synthesizer, the DX-7. It used frequency modulation synthesis (FM synthesis), first developed by John Chowning at Stanford University during the late sixties. Chowning exclusively licensed his Frequency modulation synthesis, FM synthesis patent to Yamaha in 1975. Yamaha subsequently released their first FM synthesizers, the Yamaha GS-1, GS-1 and Yamaha GS-2, GS-2, which were costly and heavy. There followed a pair of smaller, preset versions, the CE20 and CE25 Combo Ensembles, targeted primarily at the home organ market and featuring four-octave keyboards. Yamaha's third generation of digital synthesizers was a commercial success; it consisted of the Yamaha DX7, DX7 and Yamaha DX9, DX9 (1983). Both models were compact, reasonably priced, and dependent on custom digital integrated circuits to produce FM tonalities. The DX7 was the first mass market all-digital synthesizer. It became indispensable to many music artists of the 1980s, and demand soon exceeded supply. The DX7 sold over 200,000 units within three years.
The DX series was not easy to program but offered a detailed, percussive sound that led to the demise of the electro-mechanical Rhodes piano, which was heavier and larger than a DX synth. Following the success of FM synthesis Yamaha signed a contract with Stanford University in 1989 to develop digital waveguide synthesis, leading to the first commercial Physical modelling synthesis, physical modeling synthesizer, Yamaha Corporation, Yamaha's VL-1, in 1994. The DX-7 was affordable enough for amateurs and young bands to buy, unlike the costly synthesizers of previous generations, which were mainly used by top professionals.
Sampling
The Fairlight CMI (Computer Musical Instrument), the first polyphonic digital Sampler (musical instrument), sampler, was the harbinger of sample-based synthesizers. Designed in 1978 by Peter Vogel (computer designer), Peter Vogel and Kim Ryrie and based on a dual microprocessor computer designed by Tony Furse in Sydney, Australia, the Fairlight CMI gave musicians the ability to modify volume, attack, decay, and use special effects like vibrato. Sample waveforms could be displayed on-screen and modified using a light pen. The Synclavier from New England Digital was a similar system. Jon Appleton (with Jones and Alonso) invented the Dartmouth Digital Synthesizer, later to become the New England Digital Corp's Synclavier. The Kurzweil K250, first produced in 1983, was also a successful polyphonic digital music synthesizer, noted for its ability to reproduce several instruments synchronously and having a velocity-sensitive keyboard.
Computer music
An important new development was the advent of computers for the purpose of composing music, as opposed to manipulating or creating sounds. Iannis Xenakis began what is called ''musique stochastique,'' or ''stochastic music'', which is a method of composing that employs mathematical probability systems. Different probability algorithms were used to create a piece under a set of parameters. Xenakis used graph paper and a ruler to aid in calculating the velocity trajectories of glissando for his orchestral composition ''Metastasis'' (1953–54), but later turned to the use of computers to compose pieces like ''ST/4'' for string quartet and ''ST/48'' for orchestra (both 1962).
The impact of computers continued in 1956. Lejaren Hiller and Leonard Issacson composed ''Illiac Suite'' for string quartet, the first complete work of computer-assisted composition using algorithmic composition.
In 1957, Max Mathews at Bell Lab wrote MUSIC-N series, a first computer program family for generating digital audio waveforms through direct synthesis. Then Barry Vercoe wrote MUSIC-N, MUSIC 11 based on Music 4, MUSIC IV-BF, a next-generation music synthesis program (later evolving into csound, which is still widely used).
In mid 80s, Miller Puckette at IRCAM developed graphic signal-processing software for Sogitec 4X, 4X called Max (software), Max (after Max Mathews), and later ported it to Apple Macintosh, Macintosh (with Dave Zicarelli extending it for Opcode Systems, Opcode
) for real-time
MIDI
MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, an ...
control, bringing algorithmic composition availability to most composers with modest computer programming background.
MIDI
In 1980, a group of musicians and music merchants met to standardize an interface by which new instruments could communicate control instructions with other instruments and the prevalent microcomputer. This standard was dubbed MIDI (Musical Instrument Digital Interface). A paper was authored by Dave Smith (engineer), Dave Smith of Sequential Circuits and proposed to the Audio Engineering Society in 1981. Then, in August 1983, the MIDI Specification 1.0 was finalized.
The advent of MIDI technology allows a single keystroke, control wheel motion, pedal movement, or command from a microcomputer to activate every device in the studio remotely and in synchrony, with each device responding according to conditions predetermined by the composer.
MIDI instruments and software made powerful control of sophisticated instruments easily affordable by many studios and individuals. Acoustic sounds became reintegrated into studios via Sampling (music), sampling and sampled-ROM-based instruments.
Modern electronic musical instruments
The increasing power and decreasing cost of sound-generating electronics (and especially of the personal computer), combined with the standardization of the
MIDI
MIDI (; Musical Instrument Digital Interface) is a technical standard that describes a communications protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, an ...
and
Open Sound Control
Open Sound Control (OSC) is a protocol for networking sound synthesizers, computers, and other multimedia devices for purposes such as musical performance or show control. OSC's advantages include interoperability, accuracy, flexibility and enh ...
musical performance description languages, has facilitated the separation of musical instruments into music controllers and music synthesizers.
By far the most common musical controller is the
musical keyboard
A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, s ...
. Other controllers include the radiodrum, Akai's EWI (musical instrument), EWI and Yamaha's Yamaha WX5, WX wind controllers, the guitar-like SynthAxe, th
BodySynth the Buchla Thunder, the Continuum (instrument), Continuum Fingerboard, the Roland Octapad, various isomorphic keyboards including the Thummer, and Kaossilator, Kaossilator Pro, and kits like I-CubeX.
Reactable
The Reactable is a round translucent table with a backlight, backlit interactive display. By placing and manipulating blocks called ''tangibles'' on the table surface, while interacting with the visual display via finger gestures, a Virtuality, virtual modular synthesizer is operated, creating music or sound effects.
Percussa AudioCubes
AudioCubes are autonomous wireless cubes powered by an internal computer system and rechargeable battery. They have internal RGB lighting, and are capable of detecting each other's location, orientation and distance. The cubes can also detect distances to the user's hands and fingers. Through interaction with the cubes, a variety of music and sound software can be operated. AudioCubes have applications in sound design, music production, DJing and live performance.
Kaossilator
The Kaossilator and Kaossilator Pro are compact instruments where the position of a finger on the touch pad controls two note-characteristics; usually the pitch is changed with a left-right motion and the tonal property, filter or other parameter changes with an up-down motion. The touch pad can be set to different musical scales and keys. The instrument can record a repeating loop of adjustable length, set to any tempo, and new loops of sound can be layered on top of existing ones. This lends itself to electronic dance-music but is more limited for controlled sequences of notes, as the pad on a regular Kaossilator is featureless.
Eigenharp
The Eigenharp is a large instrument resembling a bassoon, which can be interacted with through big buttons, a drum sequencer and a mouthpiece. The sound processing is done on a separate computer.
XTH Sense
The XTH Sense is a wearable instrument that uses muscle sounds from the human body (known as mechanomyogram) to make music and sound effects. As a performer moves, the body produces muscle sounds that are captured by a chip microphone worn on arm or legs. The muscle sounds are then live sampled using a dedicated software program and a library of modular audio effects. The performer controls the live sampling parameters by weighing force, speed and articulation of the movement.
AlphaSphere
The AlphaSphere is a spherical instrument that consists of 48 tactile pads that respond to pressure as well as touch. Custom software allows the pads to be indefinitely programmed individually or by groups in terms of function, note, and pressure parameter among many other settings. The primary concept of the AlphaSphere is to increase the level of expression available to electronic musicians, by allowing for the playing style of a musical instrument.
Chip music
Chiptune, chipmusic, or chip music is music written in sound formats where many of the sound textures are synthesized or sequenced in real time by a
computer or video game console sound chip, sometimes including sample-based synthesis and low bit sample playback. Many chip music devices featured synthesizers in tandem with low rate sample playback.
DIY culture
During the late 1970s and early 1980s, DIY (Do it yourself) designs were published in hobby electronics magazines (notably the Formant modular synth, a DIY clone of the Moog system, published by Elektor) and kits were supplied by companies such as Paia in the US, and Maplin Electronics in the UK.
Circuit bending

In 1966, Reed Ghazala discovered and began to teach math "circuit bending"—the application of the creative short circuit, a process of chance short-circuiting, creating experimental electronic instruments, exploring sonic elements mainly of timbre and with less regard to pitch or rhythm, and influenced by John Cage’s aleatoric music concept.
Much of this manipulation of circuits directly, especially to the point of destruction, was pioneered by Louis and Bebe Barron in the early 1950s, such as their work with John Cage on the ''Williams Mix'' and especially in the soundtrack to Forbidden Planet.
Modern circuit bending is the creative customization of the circuits within electronic devices such as low voltage, battery-powered guitar effects, children's toys and small digital
synthesizer
A synthesizer (also spelled synthesiser) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis ...
s to create new musical or visual instruments and sound generators. Emphasizing spontaneity and randomness, the techniques of circuit bending have been commonly associated with noise music, though many more conventional contemporary musicians and musical groups have been known to experiment with "bent" instruments. Circuit bending usually involves dismantling the machine and adding components such as switches and potentiometers that alter the circuit. With the revived interest for analogue synthesizer circuit bending became a cheap solution for many experimental musicians to create their own individual analogue sound generators. Nowadays many schematics can be found to build noise generators such as the Atari Punk Console or the Dub Siren as well as simple modifications for children toys such as the famous Speak & Spell (toy), Speak & Spell that are often modified by circuit benders.
Modular synthesizers
The modular synthesizer is a type of synthesizer consisting of separate interchangeable modules. These are also available as kits for hobbyist DIY constructors. Many hobbyist designers also make available bare PCB boards and front panels for sale to other hobbyists.
2010s
According to
forum postin December 2010, Sixense Entertainment is working on musical control with the Sixense TrueMotion motion controller. Immersive virtual musical instruments, or immersive virtual instruments for music and sound aim to represent musical events and sound parameters in a virtual reality so that they can be perceived not only through auditory feedback but also visually in 3D and possibly through tactile as well as haptic feedback, allowing the development of novel interaction metaphors beyond manipulation such as prehension.
See also
* Electronic music
* Experimental musical instrument
* Live electronic music
* Visual music, Visual Music
;Organizations
* STEIM
;Technologies
* Oscilloscope
* Stereophonic sound
;Individual techniques
* Chiptune
* Circuit bending
;Instrument families
* Drum machine
* Synthesizer
** Analog synthesizer
* Vocoder
;Individual instruments (historical)
* Electronic Sackbut
* Continuum Fingerboard
*
Spharophon
;Individual instruments (modern)
* Atari Punk Console
* Kraakdoos
* Metronome
* Razer Hydra
;Electronic music-instruments in Indian & Asian traditional music
* Electronic tanpura
* Shruti box
References
External links
120 Years of Electronic MusicA chronology of computer and electronic music (including instruments)
History of Electronic Music(French)
DIY
Discussion forum at Electro-music.com
* Th
Synth-DIYemail list
Ken Stone's Do-It-Yourself PageMusic From Outer Space Information and parts to self-build a synthesizer.
SDIY wikia wiki about DIY electronic musical instruments
Visit-able museums and collections
* Horniman Museum'
music gallery London, UK. Has one or two synths behind glass.
Moogseum Asheville, North Carolina, USA
Musical Museum Brentford, London, UK. Mostly electro-mechanical instruments.
Musical Instrument Museum Phoenix, Arizona, USA
Berlin, Germany
Swiss Museum & Center for Electronic Music InstrumentsThe National Music Centre Collection Canada
Vintage Synthesizer Museum California, USA
* Washington And Lee Universit
Synthesizer Museum, Washington, USA
{{DEFAULTSORT:Electronic Musical Instrument
Electronic musical instruments,
Popular music
Electronic dance music
Audio engineering