[mb-users] database of works of music

Hello!

I am working on a program which is at the moment more of a "scratch one's own
itch". It is a tool for musicians to keep track of their repertoire, make
recordings and tag them appropriately, keep track of one's CDs and rip them to
flac to be able to compare them with one's own recordings (all this within the
legal limits).

All this is mostly within classical music. 

I use internally an musicbrainz id (MBID) to identify the composers, for
example for Beethoven: 1f9df192-a621-4f54-8850-2c5373b7eac9

From this mbid I derive birth and death of the composers through the web
service.

I would not like to reinvent the wheel and was wondering whether there was
already a database of classical pieces with a webservice which I could use or
whether musicbrainz is planning apart from being a database of recordings to
also be a database of pieces of classical music ever written.

If ever I would have to setup such a database, I would like to do so as close to
musicbrainz as possible.

Regards,

Gabriel