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The theremin or '''thereminvox''' (originally pronounced but often anglicized as {Link without Title} ) is one of the earliest fully Electronic Musical Instrument s. Invented in 1919 by Russia n Léon Theremin , the theremin is unusual in that it requires no physical contact in order to produce music and was, in fact, the first musical instrument designed to be played without being touched. The instrument consists of an array of circuitry including two antennas around which the user moves his or her hands to play. OVERVIEW To control the theremin, the musician stands in front of the instrument and moves his or her hands in the proximity of two metal antennas, the distance from the antennas determining Frequency (pitch) and Amplitude (volume). Small and rapid movements of the hands can create a Tremolo or Vibrato effect. Typically the Right Hand controls the pitch and the left hand is used for the volume, although some play Left-handed . Based on the principle of Heterodyning Oscillator s, the theremin generates an audio signal by combining two different but very high frequency radio signals. The Capacitance of the human body close to the antennas causes pitch changes in the audio signal, in much the same way that a person moving about a room can affect Television or Radio reception. By changing the position of the hands relative to the vertical antenna, a performer can control the frequency of the output signal. Similarly, the amplitude of the signal can be affected by altering the hand's proximity to the looped antenna. A careful combination of movements can lead to surprisingly complex and expressive performances. Typically, theremin passages mostly consist of Glissandi , however it is possible for a skilled performer to produce Staccato notes. Although theremin players do not need to have Perfect Pitch , the thereminist must rely on memory and careful listening to accurately play the instrument, which is difficult to master. HISTORY See also: the life of Léon Theremin The theremin was originally the product of Russian government-sponsored research into proximity sensors. The instrument was invented by a young Russian physicist named Lev Sergeivich Termen (most commonly known in the West as Léon Theremin) in . Although the RCA Thereminvox, released immediately following the Stock Market Crash Of 1929 , was not a commercial success, it fascinated audiences in America and abroad. Clara Rockmore , widely considered the greatest thereminist ever, toured to wide acclaim, performing a classical repertoire in concert halls around the United States, often sharing the bill with Paul Robeson . In 1938 , Theremin was kidnapped from his New York apartment by Soviet agents, and forced to return to the USSR and made to work in a '' Sharashka ''. Theremin would not return to the United States until 1991 . {Link without Title} After a flurry of interest in America following the end of the Second World War , the theremin soon fell into disuse with serious musicians mainly because newer electronic instruments that were easier to play became available. Still, among a small group of enthusiasts, interest in the theremin remained high. As a high-school student, future synthesizer guru Robert Moog began his career building theremins in the 1950s . Moog published a number of articles about building theremins and also sold theremin kits that were intended to be assembled by the customer. Moog credits what he learned from the experience as leading directly to his groundbreaking Synthesizer , the Minimoog . Today Moog Music is the leading manufacturer of performance-quality theremins. THE THEREMIN IN USE playing a Theremin live]] In popular music Theremin sounds have been incorporated into many Popular Music songs from the 1960s through the present. When Brian Wilson of The Beach Boys requested a theremin be included in the studio orchestra for the recording of 1966's " Good Vibrations ", none were available, nor a musician to play one. Paul Tanner was brought in with his homemade device called an Electro-Theremin which featured mechanical controls that could mimic the theremin sound. For concert appearances, a slide-controlled oscillator was designed and built for Wilson by Robert Moog . A theremin solo was featured in live versions of the song " Whole Lotta Love ", a hit for Led Zeppelin . The band's guitarist Jimmy Page also featured the instrument during live performances of " No Quarter ". Russian musician Lydia Kavina (a distant relative of Theremin) is today regarded as the greatest living theremin Virtuoso , having been a protégé of Léon. Pamelia Kurstin is a present-day New York -based thereminist whose eclectic styles and innovations continue to define the unique nature of the instrument. After the release of the film, ''Theremin—An Electronic Odyssey'' in 1994 (one year after the death of Léon Theremin), the instrument has enjoyed a resurgence in interest and became more widely used by contemporary musicians. Even though theremin sounds can be approximated on many modern synthesizers, many musicians continue to appreciate the expressiveness, novelty and uniqueness of using an actual theremin. Patrick Wolf is known for using a theremin prominently in his music. Pop singer Alison Goldfrapp uses theremins in many of her songs, and is infamous for her unique, sexually provocative way of playing them during live performances. Theremins have also been used in live concerts by artists such as Fishbone , Jean-Michel Jarre , Jon Spencer Blues Explosion , Charlie Clouser ( Nine Inch Nails ), Bill Bailey , Keller Williams , Wolf Parade and Mötley Crüe . Project Pimento , based in San Francisco, CA, is a well-known theremin band on the west coast of the United States. The music ensemble consisting of theremin, vocals, guitar, bass, and drums is the world's only theremin-fronted lounge music band. Robby Virus, the band's founder and theremin player, was featured on the soundtrack to the movie '' Hellboy .'' In movie soundtracks The Russian Dmitri Shostakovich was the first composer to include parts for the theremin in orchestral pieces, including a use in his score for the 1931 film '' Odna ''. While not enjoying the wide use in Classical Music performance for which it was originally designed, the instrument found great success as the 'eerie' background sound in countless motion pictures, notably, '' Spellbound '', '' The Red House '', '' The Lost Weekend '', '' The Spiral Staircase '', '' The Day The Earth Stood Still '', '' The Thing (From Another World) '', '' The Ten Commandments '' (the 1956 DeMille film), '' Ed Wood '', '' Mars Attacks! '', '' Forbidden Planet '', and in '' Bartleby ''. The DVDs for ''Ed Wood'' and ''Bartleby'' both contain short features on the theremin. Despite such efforts of serious virtuoso performers as Clara Rockmore , the instrument fell into novelty status, largely because of the extreme difficulty in playing it, as well as a lack of instruments and instructors. The theremin is used unusually, for a full melodic part, in the soundtrack of '' Hellboy .'' In television shows
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