I'm aware of Echonest. It's lacking when it comes to song relationship data, which is why the music genome project is considered to be better.
Actual people listening to and classifying songs are why it's better than the alternatives - I was just thinking of crowdsourcing it as the Music Genome project is proprietary.
Actual people listening to and classifying songs are why it's better than the alternatives - I was just thinking of crowdsourcing it as the Music Genome project is proprietary.