What the hell is a Theremin?
A Theremin is an odd electronic musical instrument that makes eery undulating noises without any apparent contact from the "player" who changes the tones of the instrument by simply moving his or her hands closer or father away from two antenna receivers. Named after Russian inventor Léon Theremin, the machine was patented in 1928 and it has never been very popular as sounds cannot be well controlled. Think "playing the saw" in electronic form, and you have the right idea.
Below we see a Theremin placed in the echo chamber of a taxidermy badger.
Why? Why not!