Picard tag mapping to Musicbrainz is set out in the link:
[Appendix B: Tag Mapping — MusicBrainz Picard v2.8.3 documentation](https://Appendix B: Tag Mapping). It includes a tag called subtitle which is intended to contain additional metadata related to a song (but typically not part of the song title) like that shown in the picture below:
In an effort to ensure that Roon is able to match/ recognise as many of the various recordings of a song in a library as possible (particularly where Roon has not been able to identify an album) I’d like to know whether Roon makes use of the subtitle tag when it’s present in a file’s metadata or present in the Musicbrainz metadata Roon ingests to brew its own metadata master in the cloud?
Stated differently, as a Roon user is there any point in putting any effort into populating the subtitle tag where Roon is concerned? This is of course, in the hope that by removing the subtitle info from the title tag, Roon’s ability to match songs is enhanced.
