Theremin, electronic, sound synthesis, avant-garde
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Theremin, electronic musical instrument invented in 1920 in the Soviet Union by Leon Theremin (also called Lev Termen). It consists of a box with radio tubes producing oscillations at two sound-wave frequencies above the range of hearing; together, they produce a lower audible frequency equal to
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Theremin - Wikipedia
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Electronic Echoes: A Selected History of Synthesizers in Music
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Electronic Music and Sound Design
Who created the synthesizer for the electric guitar? Why does it
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Synthedelia: Psychedelic Electronic Music in the 1960s
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Electronic Echoes: A Selected History of Synthesizers in Music
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History of the Synthesizer, Part 1
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Moog Claravox Centennial Theremin
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AVANT-GARDE
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Electronic music, Definition, History, & Facts
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Invention of the Theremin : History of Information