Yes so if you do a search you will see that there is an option for "view top songs". That data comes from last.fm. Everything else comes from musicbrainz (http:

Yes so if you do a search you will see that there is an option for "view top songs". That data comes from last.fm. Everything else comes from musicbrainz (http://musicbrainz.org/ http://musicbrainz.org/). I have fount that service pretty complete. There are a few others but MB is pretty large and has a good API.