Spotify, The Echo Nest acquired, a company that has knowledge about music collecting. This must be the engine of Spotify to have music to recommend and radio stations to put together be improved. The dataset of the company will remain accessible, free of charge, promises to Spotify.
The Echo Nest collects metadata of music tracks, based on which music services to their listeners to make recommendations. Also provides the fingerprinting of songs, so that services to their users, music can be uploaded, and then those copies will be replaced by versions with the highest quality.
At this time, Spotify all use the technology from The Echo Nest, as well as competitors like Rdio and Pandora. For competitors, there is little change by the acquisition of nothing, promises Spotify. For non-commercial use of the api of The Echo Nest is also free of charge.