Audio Flowers: visualising the sound of music

"In order to give you an idea of what's going on in a song at a glance we are doing research on new techniques for visualising the variability, or structural changes of rhythm, harmony and timbre in a song. Our current answer is Audio Flowers.

Variability at different time scales is calculated directly from the mp3 file and averaged across a whole track. Then the average values are shown in the flower plot: rhythm, harmony and timbre with their respective colours red, green and blue."

http://playground.last.fm/demo/complexity