The Beats Music Java SDK is one of the resources available inside the Beats Music developer's site. It redirects to a GitHub repository created by Dan Sabin. Having Android development in mind, users can consider the functionalities of the API that include to access data of music catalogs, music playlists, and music tracks. The API requires Key to authenticate and it is protected with SSL.
Stereomood is a streaming music service that gives recommendations. To start, it uses a list of moods, each of which have an associated playlist. While playing songs, users can like or ban songs, much like Last.fm or Pandora. The Stereomood API allows full access to the site's functionality to developers, allowing developers to make fully usable clients on any platform.
In another example of the ongoing battle over copyright, LyricWiki, the popular song lyric index and wiki, recently announced a major change that significantly reduces the functionality of its API (our LyricWiki API Profile). Although the API has not been shut down completely, the recent modification removes the core functionality that allows users to retrieve song lyrics.
Shoutcast maintains a radio directory of 50,000+ radio stations from all around the world. The company, owned by AOL, released its first Shoutcast API a few years ago, but has since released version 2.0. The updated API provides developers with more advanced options for integrating music streaming services into web services and mobile applications using RESTful calls formatted in XML, JSON and RSS.