I wanted to bring this again to the top.

Now that OCD allows for artist collaboration entries at both the album and track level, I wonder how hard it would be to have collaboration extended to composers (at both levels). OCD treats composers like artists in many cases anyway (both, for example, are edited in Manage Artists). That would save me 24 different entries for Johnny Mercer in the jazz database and - more importantly - bring all of the Mercer composed songs together, especially as he is not always listed as the first composer.