Editing Music information retrieval (section)

=== Recommender systems ===
Several [[recommender systems]] for music already exist, but surprisingly few are based upon MIR techniques, instead of making use of similarity between users or laborious data compilation. [[Pandora Radio|Pandora]], for example, uses experts to tag the music with particular qualities such as "female singer" or "strong bassline". Many other systems find users whose listening history is similar and suggests unheard music to the users from their respective collections. MIR techniques for [[musical similarity|similarity in music]] are now beginning to form part of such systems.