Michael Taylor notes: There is a whole community of people who try to make music (or at least a company called Oscilloscope Movie.com that sells software that converts blender models to sounds that can be displayed on an analog oscilloscope. Video overview Essentially its just the stereo input. X and Y map to left and right speaker signal, so you’re almost free to set pitches as you wish (within psychoacoustic limits if listening on headphones). Underneath is an efficient path problem.