Displaying 'Tag' preceded by 'AnotherTag'

[Kryptik]

Hello all, I'm a new user learning the ropes. I'm struggling to get an item to display in the way I'd like it to.

Using the control point I'd like to be able drill through the tags to get to composition and have it display the composer's name before the composition itself, or perhaps afterwards if it's easy enough switch. I'd like the sort order to still be based on the composition.

So, for instance, composition displays:
Smetana, Bedrich; The Moldau
Holst, Gustav; The Planets Op.39 H125
Stravinsky, Igor; The Rite Of Spring

The reason being that I'm still learning who's done what and I think this would be a good way to reinforce which composers have done what works.

Using mp3Tag I have:
ComposerSort for a composer's LastName, FirstName
ContentGroup reused for Composition

Using MinimServer I have:
aliasTags >> ContentGroup:Composition, ComposerSort:Composer Sort
indexTags >> Composer Sort, Composition

I thought the answer might be this, below, but it hasn't worked for me:
tagFormat >> Composition.indexFormat={$Composer Sort$Composition}

Could somebody kindly assist? Thanks.