Piano Concerto in A minor Opus 17 (2) Ignacy Jan Paderewski
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Music's greatest inventions: amazing, mad and brilliant instruments
An instrument played by waving your hand near it? Sounds odd, but Leon Theremin's experiments with electronic sound in the 1920s led to him inventing the Theremin. Since then, the instrument's distinctive whistle has been a favourite in sci-fi movies, Beach Boys songs and avant garde composers of the 20th Century.