Example videos here (not so impressive, right?): https://peertube.swrs.net/video-channels/cascade/videos

Here is an interactive example: https://raphaelbastide.com/cascade/demos/cursor.html

And here is a schema describing how sound is mapped to graphics: https://raphaelbastide.com/cascade/website/img/poster.svg (e.g. probability of sound is mapped to opacity of the HTML element).

What a weird/unexpected way of producing music. Does not look so handy, but still it’s interesting if you already know CSS.