How to do it:
1) Make a really slow animation in a procedural modelling program - I used Mandelbulb 3D, which combines fractals with ordinary 3D space transformations
2) Set up a  drone of the same length in a music synthesis application - I used Max/MSP
3) Use the changing parameters of the animation to control some of the parameters of the drone, so that it evolves over time in perfect synchronisation with the animation.
It really IS that simple... but ... would anybody notice?
Hardly, I guess ... enjoy, anyway!
here is thevideo
https://youtu.be/75BuAGZtd7w

Dance Music For Really Slow Creatures (see description for video)

Cork City Gamelan