Want to create web mashups about music? You have lots of sources to choose from as there are over 25 music APIs listed on ProgrammableWeb including most popular Last.fm API. Music APIs can aid developers with library metadata, streaming radio databases, social interaction features, and more.
Rap enthusiasm site, Rap Genius has gone through the impressive tasks of combing rap and Google Maps. Rap Genius' Rap Map is a Google Map-based visual almanac of all things rap. You can scan an area and view rap landmarks and places mentioned or referenced in some famous rap lyrics.
There's a lot of fuss over the RIAA and the Internet. It seems like it's been a never-ending battle to make music play nice with the internet. Sure, we've got services like Rdio and Grooveshark, but what about making data open to make our listening experience better and more connected with everything else we do?