Pydora is a Python-based implementation of the Unofficial Pandora API. While Pydora is fairly complete, it doesn't include any of the undocumented features, or most of the account management features, of the API.
Vokoder offers a simple service for the independent artist. If you are just getting going as a professional musician, Vokoder gives you your first e-commerce experience. Artists can upload their music, share links to it, and then get paid for it as visitor’s purchase the artist’s content. This service is so simple, it’s genius. And selling music online has to beat standing on the corner in all kinds of weather playing for pocket change.
Jaxta is an online music credentials resource that was founded in 2015 with the aim of ensuring that music creators get the credit that they are due. The company now operates a massive database of music credits and has announced an API to expose this data for third-party use.