While working on my next album (Minimum Viable Product of a Misspent Youth), I decided to have a go at building a music visualiser.
No particular reason why, I've just never done it before. It involves attaching a Web Audio API Analyser Node to a Canvas then outputting the whole thing using a MediaRecorder.
The next post has details on how the basics of this approach works and how to build your own and here are a couple of examples of the visualisations.
btw, while you're waiting, why not check out my previous albums on Spotify?