It's not exactly art, but similar to a vumeter, you get an artifical "dancer" on your screen: just like watching other people dance (in rhythm), it activates yo

It's not exactly art, but similar to a vumeter, you get an artifical "dancer" on your screen: just like watching other people dance (in rhythm), it activates your visual metronome and gets you more engaged with music. If the above sounds convincing, bear in mind that I am just thinking aloud, and I have no idea if any of the above translates to other people, let alone that this might be the reason music is ever visualized like this for playback.