You could attack the problem a bit like one of those old MAD spoof "Do-It_Yourself Newspaper Story" multiple choice things.

List a bunch of instruments you might be using:

Gittern, Lute, Gem's Horn, Crumhorn, Rebec and more

List a number of ways of saying "duo":

Brace, Couple, Duo, Two, Binary, Double, twins etc

List some old musicians by name or type:

Troubadour, Blondel, Tallis, Perotinus Magister, etc

List a bunch of relevant other words:

Dance, Prance, Singers and so on

List some tune or song titles:

Nutmeg and Ginger, Mrs Winter's Jump, Heart's Ease, for instance

And then mix and match like mad to get Rebec Prancing Duo, or Nutmeg Tallis, or Mrs Winter's Blondel Gittern Twins, or Binary Crumhorn.

If that's not enough, add in various mediaeval games, torture practices, famous paintings and plants. You could put each word on a different piece of paper and throw them all in the air and see what landed on the butter dish right side up. Or throw darts at them.