When's the last time you heard a Theremin in person? It's probably been a while (despite what I thought, Neutral Milk Hotel and "Good Vibrations" don't actually use one). Luckily, you'll get your chance when one of the preeminent Thereminists, Pamelia Stickney, performs this Thursday and Friday at Glitterbox Theater. Quick reminder: a Theremin is that electronic instrument in which the performer moves their hands in the air between two antennae and it sounds like UFOs in '80s movies. The event page invites you to "bring a pillow." Come relaxed! -Alex Gordon