This is my first attempt at music visualisation, using the Processing programming language, building on the Zeno animation system I've been developing for my first two videos Music is Math and Metamorphosis. This time it's Radiohead with their Bodysnatchers track from In Rainbows.
What has helped this particular form of music visualisation is that it's already based on a pre-existing generative animation system, so the audio reaction just adds another dimension. It's a 50/50 generative + audio reactive piece.
More info at butterfly.ie