You might want to take a look at Big Clive's video about the radar motion detectors in Chinese E27 socket LED bulbs [0], which have become cheaper even back in mid-2016 than good old PIR motion detectors. The latter are basically a castrated Flir-style camera, the former closer to this.
Well done, very modern and slick. Maybe I've been out of the loop but music visualizations never became broadly popular or good, and even in the Windows days they were a little bit cheesy feeling...