Soviet Inventor Leon Theremin Shows Off the Theremin, the Early Electronic Instrument That Could Be Played Without Being Touched (1954)
Briefly

The theremin, invented by Leon Theremin in 1919, is remarkable not only for its eerie sound but also for being the first electronic instrument played without physical contact.
Theremin demonstrated his invention to Lenin in 1922, garnering admiration for its futuristic design and sound, which led to international performances and its eventual popularization.
Classical violinist Clara Rockmore became a key proponent of the theremin, tirelessly demonstrating its potential and adapting classical pieces, thereby elevating its status in the music world.
Despite initial perceptions of the theremin as a novelty, Rockmore's work and commitment to the instrument helped it gain recognition as a serious musical tool.
Read at Open Culture
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