We get to sample the first fruits of Spotify's acquisition of The Echo Nest today with the launch of its new Web API. Developers will now have the ability to build music apps on and off the Spotify platform that take advantage of the combined Spotify and Echo Nest API's massive collections of music, data and content. New features include: Rich Metadata. The new web API lets developes retrieve extensive track, album and artist details from the Spotify catalog, including cover art and 30 second track previews. User Profiles & Playlists. With a user's permission, developers can now access user...

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