Dissecting Songs Down to Their 'Musical Genome'
I'm a musician, and I told it some songs I liked and it's playing a customized radio station of songs that I should like... and it's dead on.
The best part is that you can ask it "Why are you playing this song", and it will explain it to you.. in terms of the song structure and things like that.
These are real people analyzing these songs.. this seems like a great service to find new music from bands you don't know. Taking bands out of the context of a "social circle" (like Amazon and itunes do by simply looking at 'people who purchased this also purchased...') is a GREAT idea.
I urge you to support this project if you are a music lover, or at least check it out and listen for a couple hours.