Incidentally, who gave the performance in your link? They all look Chinese to me, not Russian. Was it a fellow Commie goodwill tour?
I just found your post a few minutes ago while looking for something else I posted a few days ago. While there was no credits in the youtube poster's header I did find a reference to the who what where down in the comments.
The performance was from the Daegu City Symphony Orchestra, South Korea, conducted by Sung Kwak.