"Some More ... Folk Dancing"

Currently scanning a bunch of slides, seemingly American, but many from a 1979 trip behind the Iron Curtain.  Bucharest, Belgrade, Kishinev Trade Union Palace and such like.

This is labeled as Folks Dancing and Music. Obviously, the music hasn't been captured by the slide, but I suspect it was dreadful.

Bonus - (CFB - From Those Naughty Chaps at B3TA)