Jack I would think so too. And possibly there are songs containing layered language, a code of some sort to express those emotions amongst those privy to the code, in way some Soviet-era theatre, music and literature contained double meanings.

mg, I encourage you to contact Alan Gasser, co-director of Echo Women's Choir, e-mail info DOT echo AT gmail DOT com. Both Alan and Becca Whitla are wonderful people who likely can help you source the sort of thing you seek. Alan has directed a Georgian choir in Toronto for a long time so I would fully expect hime to be well aware of the political subtlties relating to the ethnic mix in Georgia and its music as well as to know the music itself.

Click for the public bit of Alan's Linkedin profile.