Different groups with same group tag

[kavermeer]

The groupmatch tag would work, but it's still additional work. What about some property that would define which tags are taken into account for the group matching? As mentioned, I'd use the composer tag, but it could also include composition, albumartist, year or whatever helps to distinguish the groups. But maybe I can already get the same result by combining various tags into groupmatch - I'm a fairly new user, so I still need to figure these things out...