You probably think you don’t know what a theremin is, but if you’ve ever heard the Beach Boys’ “Good Vibrations” then you’d recognize the eerie, high pitched sound (this is the most famous example, although apparently it was just an Electro-Theremin, a machine made to mimic the sound). Invented in 1919, it’s the only instrument in existence that you play without touching anything. You actually just play the air around two metal wires, manipulating the pitch and volume, respectively. Sounds kinda fun, right? Turns out (and I know from experience) it is nearly IMPOSSIBLE to play- think about it, you have no keys, no notches, you’re just playing air. That’s why when I saw this video from the 70s, of someone not just playing the theremin, but playing it beautifully, I was floored. Anyway, it’s pretty wild, you should check it out. Remember, there are no strings, she’s just playing the air around the wires.