I bought my first synth from Wayne Lytle (creator of Animusic) ten years ago, when he was still working on the first Animusic. He even sent me a demo rough draft of it and made some animation changes based on feedback of mine.
I had no idea these guys did anything other than the balls and pipes demo they used to show off 3d graphics cards so many years ago.
Also i've always wondered if they animate the "instruments" to the song or if they create these in some program that they can just feed a MIDI into and it does the work for them
Unlike many other music visualizations, the music drives the animation. While other productions might animate figures or characters to the music, the animated models in Animusic are created first, and are then programmed to follow what the music "tells them" to. 'Solo cams' in the Animusic DVD shows how each instrument actually plays through a piece of music from beginning to end.
I reviewed one of these DVDs for a website ages ago and the developers told me they used some kind of software that transposed MIDI data into animation data so that the rendered animation was actually guided specifically by precise MIDI information, and thus timed almost perfectly without having to be done by hand.