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MusicBrainz
MusicBrainz
is a project that aims to create an open data music database that is similar to the freedb project. MusicBrainz
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 (compact disc) information on the Internet. MusicBrainz
MusicBrainz
has expanded its goals to reach beyond a compact disc metadata (this is information about the performers, artists, songwriters, etc.) storehouse to become a structured open online database for music.[5][6] MusicBrainz
MusicBrainz
captures information about artists, their recorded works, and the relationships between them. Recorded works entries capture at a minimum the album title, track titles, and the length of each track. These entries are maintained by volunteer editors who follow community written style guidelines. Recorded works can also store information about the release date and country, the CD ID, cover art, acoustic fingerprint, free-form annotation text and other metadata. As of 26 July 2016[update], MusicBrainz
MusicBrainz
contained information about roughly 1.1 million artists, 1.6 million releases, and 16 million recordings.[3] End-users can use software that communicates with MusicBrainz
MusicBrainz
to add metadata tags to their digital media files, such as FLAC, MP3, Ogg Vorbis
Ogg Vorbis
or AAC.

Contents

1 Cover Art Archive 2 Fingerprinting

2.1 Proprietary services 2.2 AcoustID and Chromaprint

3 Licensing 4 Client software 5 See also 6 References 7 Further reading 8 External links

Cover Art Archive[edit] MusicBrainz
MusicBrainz
allows contributors to upload cover art images of releases to the database; these images are hosted by Cover Art Archive (CAA), a joint project between Internet Archive
Internet Archive
and MusicBrainz
MusicBrainz
started in 2012. Internet Archive
Internet Archive
provides the bandwidth, storage and legal protection for hosting the images, while MusicBrainz
MusicBrainz
stores metadata and provides public access through the web and via an API for third parties to use. As with other contributions, the MusicBrainz
MusicBrainz
community is in charge for maintaining and reviewing the data.[7] Cover art
Cover art
is also provided for items on sale at Amazon.com
Amazon.com
and some other online resources, but CAA is now preferred because it gives the community more control and flexibility for managing the images. Fingerprinting[edit] Besides collecting metadata about music, MusicBrainz
MusicBrainz
also allows looking up recordings by their acoustic fingerprint. A separate application, such as MusicBrainz
MusicBrainz
Picard, must be used for this. Proprietary services[edit] In 2000, MusicBrainz
MusicBrainz
started using Relatable's patented TRM (a recursive acronym for TRM Recognizes Music) for acoustic fingerprint matching. This feature attracted many users and allowed the database to grow quickly. However, by 2005 TRM was showing scalability issues as the number of tracks in the database had reached into the millions. This issue was resolved in May 2006 when MusicBrainz
MusicBrainz
partnered with MusicIP (now AmpliFIND), replacing TRM with MusicDNS.[8] TRMs were phased out and replaced by MusicDNS in November 2008. AcoustID and Chromaprint[edit] In October 2009 MusicIP was acquired by AmpliFIND.[9] Some time after the acquisition, the MusicDNS service began having intermittent problems. Since the future of the free identification service was uncertain, a replacement for it was sought. The Chromaprint acoustic fingerprinting algorithm, the basis for AcoustID identification service, was started in February 2010 by a long-time MusicBrainz contributor Lukáš Lalinský.[10] While AcoustID and Chromaprint are not officially MusicBrainz
MusicBrainz
projects, they are closely tied with each other and both are open source. Chromaprint works by analyzing the first two minutes of a track, detecting the strength in each of 12 pitch classes, storing these 8 times per second. Additional post-processing is then applied to compress this fingerprint while retaining patterns.[11] The AcoustID search server then searches from the database of fingerprints by similarity and returns the AcoustID identifier along with MusicBrainz
MusicBrainz
recording identifiers if known. Licensing[edit] Since 2003,[12] MusicBrainz's core data (artists, recordings, releases, and so on) are in the public domain, and additional content, including moderation data (essentially every original content contributed by users and its elaborations), is placed under the Creative Commons
Creative Commons
CC-BY-NC-SA-2.0 license.[13] The relational database management system is PostgreSQL. The server software is covered by the GNU General Public License. The MusicBrainz
MusicBrainz
client software library, libmusicbrainz, is licensed under the GNU Lesser General Public License, which allows use of the code by proprietary software products. In December 2004, the MusicBrainz
MusicBrainz
project was turned over to the MetaBrainz Foundation, a non-profit group, by its creator Robert Kaye.[14] On 20 January 2006, the first commercial venture to use MusicBrainz
MusicBrainz
data was the Barcelona, Spain-based Linkara in their Linkara Música service.[15] On 28 June 2007, BBC
BBC
announced that it has licensed MusicBrainz's live data feed to augment their music Web pages. The BBC
BBC
online music editors will also join the MusicBrainz community to contribute their knowledge to the database.[16] On 28 July 2008, the beta of the new BBC
BBC
Music
Music
site was launched, which publishes a page for each MusicBrainz
MusicBrainz
artist.[17][18] Client software[edit]

Amarok – KDE
KDE
audio player Banshee – multi-platform audio player Beets – automatic CLI music tagger/organiser for Unix-like systems Clementine – multi-platform audio player CDex
CDex
Microsoft Windows
Microsoft Windows
CD ripper Demlo – a dynamic and extensible music manager using a CLI iEatBrainz – Mac OS X deprecated foo_musicbrainz component for Foobar 2000
Foobar 2000
Music
Music
Library/Audio Player Jaikoz
Jaikoz
– Java mass tag editor Max – Mac OS X CD ripper
CD ripper
and audio transcoder Mp3tag
Mp3tag
Windows
Windows
metadata editor and music organizer MusicBrainz Picard
MusicBrainz Picard
– cross-platform album-oriented tag editor MusicBrainz
MusicBrainz
Tagger – deprecated Microsoft Windows
Microsoft Windows
tag editor puddletag – a tag editor for PyQt
PyQt
under the GPLv3 Rhythmbox
Rhythmbox
music player – an audio player for Unix-like systems Sound Juicer
Sound Juicer
– GNOME CD ripper Zortam Mp3 Media Studio – Windows
Windows
music organizer and ID3 Tag Editor.

Freedb clients can also access MusicBrainz
MusicBrainz
data through the freedb protocol by using the MusicBrainz
MusicBrainz
to FreeDB gateway service, mb2freedb. See also[edit]

List of online music databases

References[edit]

^ "About". MusicBrainz. MetaBrainz. Retrieved 4 May 2015.  ^ "Musicbrainz.org Site Info". Alexa Internet. Retrieved 2016-07-26.  ^ a b "Database Statistics". MusicBrainz. Retrieved 2016-07-26.  ^ "WHOIS Lookup". ICANN. Retrieved 23 March 2015.  ^ Highfield, Ashley. "Keynote speech given at IEA Future Of Broadcasting Conference", BBC
BBC
Press Office, 2007-06-27. Retrieved on 2008-02-11. ^ Swartz, A. (2002). "MusicBrainz: A semantic Web service" (PDF). IEEE Intelligent Systems. 17: 76–77. doi:10.1109/5254.988466.  ^ Fabian Scherschel (10 October 2012). " MusicBrainz
MusicBrainz
and Internet Archive create cover art database". The H. Archived from the original on 7 December 2013.  ^ "New fingerprinting technology available now!" (Press release). MusicBrainz
MusicBrainz
community blog. 2006-03-12. Retrieved 2006-08-03.  ^ AmpliFIND Music
Music
Services: News Archived 2013-09-21 at the Wayback Machine. ^ Introducing Chromaprint – Lukáš Lalinský ^ How does Chromaprint work? – Lukáš Lalinský ^ " MusicBrainz
MusicBrainz
Licenses". Archived from the original on April 13, 2003. Retrieved 2015-10-23. CS1 maint: BOT: original-url status unknown (link) ^ MusicBrainz
MusicBrainz
License as of 13-11-2010. ^ Kaye, Robert (2006-03-12). "The MetaBrainz Foundation
MetaBrainz Foundation
launches!" (Press release). MusicBrainz
MusicBrainz
community blog. Retrieved 2006-08-03.  ^ Kaye, Robert (2006-01-20). "Introducing: Linkara Musica". MusicBrainz. Retrieved 2006-08-12.  ^ Kaye, Robert (2007-06-28). "The BBC
BBC
partners with MusicBrainz
MusicBrainz
for Music
Music
Metadata". MusicBrainz. Retrieved 2007-07-10.  ^ Shorter, Matthew (2008-07-28). " BBC
BBC
Music
Music
Artist Pages Beta". BBC. Retrieved 2009-02-12.  ^ MusicBrainz
MusicBrainz
and the BBC
BBC
as of 2013-03-16

Further reading[edit]

Making Metadata: The Case of MusicBrainz. Jess Hemerly. Master's project at UC Berkeley. 2011.

External links[edit]

Wikimedia Commons has media related to MusicBrainz.

MusicBrainz
MusicBrainz
– official site MusicBrainz
MusicBrainz
info at the BBC
BBC
Music
Music
site Cover Art Archi

.