Trying to find the original work for the first song in this medley. I've heard the melody in Ray Stevens' "Surfin' U.S.S.R." before (the "Yo yo yo yo yo..." chorus if you're familiar with the song), but have no idea what it's called.
Michael, here it is Полюшко-поле
also covered by Jefferson Airplane on Volunteers
Yo Yo Yo greets