Interesting! Wish them well. We have a worldwide crossover situation going on here now. Good thing the hill people don’t sue for cultural appropriation!
Of course all of what I theorized in my previous post is nothing more than mere speculation, as I had never heard of them previous to today either. 8>)
I must say that the Russian singer on the Fleetwood Mac song amazed me with her singing in the fact I could detect no Russian accent. She was born and raised in Russia, because that I did look further into and verified that she wasn't of Russian descent but born here nor emigrated here at an early age.
I'm sure the mountain people are happy that their music is enjoyed finally. 8>)
Back in the U.S.S.R - Leningrad Cowboys & The Red Army Ensemble
They are a hoot. 8>)