Thanks for the book recommendation, George, I just ordered it.

I am very familiar with Pontic music and dance--there is/was a Church near me in Philly with a large Pontic contingent, and they had an excellent performing dance company that centered around an also excellent lyra player. I am aware that it is claimed that the music is, as you say, akin to the ancient greek, but, the Turks and Armenians of the area play the same music, and (at least from my recollection, since I haven't heard any of it in years) it seems very similar to the music of Turkic tribes of farther to the east--admittedly an impression, rather than an analysis--