[1] https://developer.spotify.com/documentation/web-api/referenc...
1. The Album Leaf https://open.spotify.com/artist/02uPe16VFxPaiueQsPEDkE
There I have only basic visualisation so far.
edit: It would also be cool to see the visualizer's current estimate for the BPM.
2nd edit: Is the shader code for the visualization's available anywhere?
Section iii, bullet 6: https://developer.spotify.com/policy/#iii-some-prohibited-ap...
It's a WebGL port of the Winamp visualizer.