Please have look at
http://www.apple.com/quicktime/guide/hd/animusic2dvd.html

I think it's one of the best I've seen... amazing precision and detailed 'performance'

I have Animusic's first DVD, and am soon going to order #2. My first exposure to the work of these artists was on public television (PBS). The animation is not just "synchronized" to the music. Their proprietary software (which they do not plan to release) actually responds in real time to the music it receives. In other words, the music "drives" the animation. It is amazing beyond description! Definitely entertaining for adults as well as children.

Charles

Here is another one:
http://video.google.com/videoplay?docid=2942922314315974986

Eric

Eric: That is WAY cool!

I have both Animusic's DVDs. They are among my favorites. I would love to get my hands on just the midi files that drive the animations............I guess they are midi's !!!!!