I've always found these sorts of things interesting - I was obsessed with MilkDrop years ago (as someone has already mentioned, it's in MilkDrop's ballpark), bu

I've always found these sorts of things interesting - I was obsessed with MilkDrop years ago (as someone has already mentioned, it's in MilkDrop's ballpark), but even going back to when I was a kid there was a program on the ZX Spectrum in a magazine listing that read the EAR port and modulated the colours on screen to match the music (after a fashion!). I'd be interested to know if this is running solely by analysing the audio or if they have access to a MIDI file or similar that gives cues as to each sound. I know that the ability to process and recognise individual sounds is becoming ever more powerful, but it would be an easy shortcut to have a MIDI file generated by the sequencing software to give cues for each specific piece of landscape (as they all seem to be tied to a given sound, and then have variations in their appearance depending on that sound's specific pitch). It's added another thing to the "list of things that I think I should know how to do"...