Bach, “Little” Fugue (G minor)
Played and visualised with the freeware Tapper application [link], which is available for Windows and Mac. Contains introduction and explanation of concepts, which are worth reading through if you have an interest in technology and music, and computer-mediated music performance.
Interesting aesthetics and minimal visual narrative - may have more creative uses than initially for.
Plenty more examples found in Smalin’s YouTube channel, Music Animation Machine