On an institutional level, the Red Army Choir likely remembers the propaganda coup it scored touring the West during the height of the Cold War while performing “It’s a long way to Tipperary.” (It was a crowd favorite). On a professional level, they’ll perform anything put to sheet music, and enjoy proving that they can (language barrier, etc., notwithstanding).
Oh, and if you can find the Red Army Choir’s version of “It’s a long way...” on YouTube or elsewhere, give it a listen. (I can’t on this computer).