"That’s precisely what a theremin is, you philistine."

Sheldon extends his right hand toward the vertical antenna, left hand hovering over the horizontal loop. He moves his fingers with surgical precision. An eerie, wavering glissando fills the room—somewhere between a cello, a sci-fi sound effect, and a distressed cat.

(not stopping) "The theremin was the first electronic musical instrument. Invented in 1920 by Léon Theremin. Also used on the Beach Boys’ ‘Good Vibrations’ and for every alien abduction soundtrack ever made."