My perfect system
- tracks have MBIDs.
- recordings get merged a lot more than do now.
I like the FRBR model, which in musicbrainz has a good mapping for albums, and I believe we should have the same mapping for songs:
|FRBR||MB album||MB song|
So when recordings should be merged etc.. should follow Expression as defined in 3.2.2 at http://archive.ifla.org/VII/s13/frbr/frbr_current3.htm#3.2 .
Currently tracks on my local disc have recording MBIDs (and artist, album artist and release MBIDs I guess). But those ids are not useful for identifying a particular file on disc, or linking other data to a particular file, because there are releases where I have different versions of the release, and thus have different files with the same recording MBID.
I could ofcourse assign my own id or just use filename + path, but then I cannot communicate with other systems about this music. So, I want track ids again.