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Database Services No. of tracks No. of releases No. of artists Notes License Full free access AllMusic: Music information and reviews. ~20,000,000 [7] ~2,200,000 [7] Song samples only. Discogs • Database: user-generated cross-referenced database of physical & digital releases, artists, and labels. With catalogue numbers, codes, and other ...
Freedb was a database of user-submitted compact disc track listings, [1] where all the content was under the GNU General Public License. To look up CD information over the Internet, a client program calculated a hash function from the CD table of contents and used it as a disc ID to query the database. If the disc was in the database, the ...
MusicBrainz was founded in response to the restrictions placed on the Compact Disc Database (CDDB), a database for software applications to look up audio CD information on the Internet. MusicBrainz has expanded its goals to reach beyond a CD metadata (this is information about the performers, artists, songwriters, etc.) storehouse to become a ...
CDDB was designed around the task of identifying entire CDs, not merely single tracks. The identification process involves creating a "discid", a sort of "fingerprint" of a CD created by performing calculations on the track duration information stored in the table-of-contents of the CD (see the following section for an example calculation).
This has been controversial, as the original CDDB database was created out of anonymous contributions, initially via the open source xmcd CD player program. Many listing contributors believed that the database was open-source as well because, in 1997, cddb.com's download and support pages had said it was released under the GPL.
A hidden track (sometimes called a ghost track, secret track or unlisted track) is a song or a piece of audio that has been placed on a CD, audio cassette, LP record, or other recorded medium, in such a way as to avoid detection by the casual listener. In some cases, the piece of music may simply have been left off the track listing, while in ...
Discogs (/ ˌ d ɪ s ˈ k ɒ ɡ z /; short for discographies) is a database of information about audio recordings, including commercial releases, promotional releases, and bootleg or off-label releases. Database contents are user-generated, and described in The New York Times as "Wikipedia-like". [4]
AllMusic (previously known as All-Music Guide and AMG) is an American online music database. It catalogs more than three million album entries and 30 million tracks, as well as information on musicians and bands. Initiated in 1991, the database was first made available on the Internet in 1994. [2] [3] AllMusic is owned by RhythmOne.