UPF MusicSurfer mimics humans in listening, understanding and recommending music. It automatically extracts descriptions related to instrumentation, rhythm and harmony. Together with complex similarity measures, the descriptions allow navigation of multimillion track music collections in a flexible, efficient, and truly personalized way. As a music similarity opinion engine it can also generate smart playlists. A lightweight version of the similarity engine is available for embedding in portable devices, such as iPods.

MusicSurfer goes beyond browsing of music by genre, artist or album. It allows navigation of huge music collections using only music features automatically extracted from the audio. No metadata or human ratings are needed.