Subsitute the musicbrainz direct access to metadata by the library beets

[coissac]

The beets library seems to provide access to disc metadata but with the advantage of integrating data from several databases.

https://beets.io/

[coissac]

Actually I had a deeper look into beets. It is an application and seems to highly rely on MusicBrainz. Perhaps some complementary data can be retrieved from a link between musicbrainz and discogs. But you cannot search discog without authentication and from a disc id. Therefore, I'll continue to rely on musicbrainz that seems to be the only open source database easily available.

There is also the CUETools database (CTDB) that could be interesting as an alternative source of metadata but no library implementing the API seems usable outside of the windows.
I put here for memory a link to a CTDDB entry http://db.cuetools.net/cd/7322715