Music APIs: Way to find most downloaded?

Music APIs: Way to find most downloaded?

References

Reference NO 1

http://stackoverflow.com/questions/15187489/music-apis-way-to-find-most-downloaded

Reference NO 2

http://blog.programmableweb.com/2008/02/21/25-music-apis/

Reference NO 3

http://fanart.tv/api-docs/music-api/

Reference NO 4

http://api.ent.nokia.com/restapi.html

Reference NO 5

http://www.last.fm/api

Reference NO 6

http://www.fastcolabs.com/3015212/the-importance-of-an-api-or-why-nobody-cares-about-rhapsody

Reference NO 7

http://www.sitepoint.com/using-the-last-fm-api/

Reference NO 8

http://dev.npr.org/