Because I enjoy sharing interesting bits about technology I run across, here's a mesmerizing one combining motion graphics and musical tones generated from a digital synthesizer to great effect.
In fact, this stereo combination of 210 notes is only one of 17 explorations of digital harmony on this Web site, inspired by the work of the late John Whitney, who once worked with Alfred Hitchcock on his classic film, Vertigo, before starting to film motion picture and TV sequences using a computer in 1960 and later composing his own music the very same way.
Whitney's Music Box