Shuffler.fm is a web based music magazine that allows users to browse music on the web through music sites and blogs. It allows them to discover new music and keep an eye on current trends, with the help of those in the know.
MixCloud is a combination of music discovery and promotion. It strives to serve the intersection of interests between listeners that want to find new and interesting music and artists that want to get their music in front of a wider audience. The idea is that you can get recommendations by following the music mavens of whichever genre you choose. Most people find new music through friends. Having a friend that’s plugged into the latest music trends keeps you jamming along to new stimulating tracks. Imagine if your friend’s knowledge of and refined taste in music were accessible by API. That’s what we’ve got with the MixCloud API.
Echo Nest's API already powers hundreds of music apps (e.g. MTV, Music Hunter, Pocket Hipster, etc.). With new enhancements to its API, Echo Nest looks to expand its reach beyond the music industry by "us[ing] music to drive non-music apps." Echo Nest added "Taste Profile Similarity" and an "affinity prediction" system to its existing platform. With the new features, Echo Nest hopes to connect music listeners to other listeners with similar tastes and predict behavior unrelated to musical preferences.