The theremin is an early electronic musical instrument controlled without contact from the player. It is named after its Russian inventor, Professor Léon Theremin, who patented the device in 1928. The controlling section usually consists of two metal antennas which sense the position of the player's hands and control oscillators for frequency with one hand, and amplitude (volume) with the other. The electric signals from the theremin are amplified and sent to a loudspeaker.
The theremin is associated with a very eerie sound, which has led to its use in movie soundtracks such as those in Spellbound, The Lost Weekend, and The Day the Earth Stood Still. Theremins are also used in art music (especially avant-garde and 20th- and 21st-century new music) and in popular music genres such as rock; Psychedelic Rock bands in particular, such as Hawkwind, have often used the Theremin in their work.
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