The Clavecin Electrique is one of the earliest documented musical instruments to use electronic principles. Designed in 1759, the instrument had a keyboard connected by silk strings and wire to pairs of bells tuned in unison with a beater suspended between them. By holding down a key the beater was alternately attracted and rejected by each bell creating a sustained tone. That means this 18th century instrument could do electronic drone music... and it also shot sparks!
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