My bad I think I misunderstood your question about musicbrainzId.
It is used internally :
- as a key for albums and artists to properly handle duplicated names.
- to retreive audio data analysis from AcousticBrainz
If you have musicbrainz identifiers in your file, it is assumed the other tags (artist, album, etc.) are correct and are directly used.
If you have musicbrainz identifiers in your file, it is assumed the other tags (artist, album, etc.) are correct and are directly used.