Different groups with same group tag

[kavermeer]

I have a 2-CD set containing different sets of tracks that I would like to tag with the same group tag. In my case, I have Mozart's Coronation Mass and Beethoven's Missa solemnis. They contain similar movements, spread out over different tracks, so I labeled these with group tags.

Now MinimServer complains (in the log file) that the group spans over non-consecutive tracks. That is true, of course, but my expectation was that the grouping was taking, for example, the composer tag into account.

Of course, I'd like MinimServer to read my mind, but given that that's not very realistic, what would be the best way to tag things correctly?

Thanks!
Koen