AcousticBrainz: An open database of song fingerprints from MusicBrainz.

MusicBrainz, the database of everything music-related, has launched AcousticBrainz, a database of song characteristics in the manner of Soundhound or Shazam, but with the data freely available to anyone, and a really horrible name. Nobody’s built a Shazam-like frontend for it as yet, but no doubt that will come. Here’s a sample of the sort of data they collect, which is more extensive than MusicBrainz’ existing AcoustID fingerprint database.