The Universitat Autònoma de Barcelona Research Park has a new company: a spin-off of the UAB and the Higher Council for Scientific Research (CSIC). MusicStrands uses artificial intelligence techniques to provide people with music recommendations. This initiative is the first and only one to use tags applied to music; tags are labels that people can attach on the music they like for easy retrieval later. Tags also make it easy to discover playlists by keying on interesting tags supplied by other users; in addition, tags can help anyone organize playlists by common features. Users of the MusicStrands website have access to a directory of 3.9 million songs.