CBC had a great short on the Theremin, an instrument invented in 1919 by the Russian Lev Termen (later Leo Theremin). You don’t touch the instrument, you move your hands close to antennas to produce an eerie, almost human, sound typical of early science fiction movies. According to Theremin World a revival started in the 1990s – the Theremin is back. Needless to say, I want one.