Pandora creates streaming radio stations based on what you like to listen to. It uses a nifty and not terribly overwrought Flash interface and, more importantly, bases its recommendations on the Music Genome Project, which I’d never heard of, naturally…

“Together our team of thirty musician-analysts have been listening to music, one song at a time, studying and collecting literally hundreds of musical details on every song. It takes 20-30 minutes per song to capture all of the little details that give each recording its magical sound – melody, harmony, instrumentation, rhythm, vocals, lyrics … and more – close to 400 attributes”

So far, so good.