I would now like to look into some problems with I have with my music collection (classical music). First, I want to emphasize that kodi does a great job and I really like to use it. I very much appreciate the roles concept.
The problem I will describe [with my very limited English] occurs in many cases, but my concrete example is the “Orchestral works” collection from G.F. Handel (click). To every track, I add the tag “composer”, which is “Georg Friedrich Händel”. I would now expect that there is one (!) entry under roles -> composers with that name. In fact, there are two entries: One is “Georg Friedrich Händel” and one is “Georg Friedrich Händel; The English Concert, Trevor Pinnock”. The first entry is correct. But the latter is a different tag: album artist. Why does this appear unter roles -> composers?
There is one additional problem. It is a cd collection with six discs. I guess they where published some time ago as individual publications. So MusicBrainz put individual publication dates to these discs. I should have corrected them to the release date of the box set, I guess. Now, I don’t have one (!) album “Orchestral works” but six albums “Orchestral works”. Four of them are listed under the conductor “Georg Friedrich Händel” and two of them are listed under “Georg Friedrich Händel; The English Concert, Trevor Pinnock”.
What I would like to have is one (!) conductor “Georg Friedrlich Händel”. I don’t know where the other conductor entry comes from and I think this could be a bug (but that’s just a guess 
). And I would like to have one (!) album “Orchestral works” which consists of course of six discs. I don’t know if I can tell kodi somehow to ignore the publication dates or if I have to merge them to one date.
I hope that I made the problem(s) clear. What do you think about it?
Thanks a lot
Martin