Hello there, I see you are from Rusia, I do not know If you have saw this video, it is the Alexandrov Ensemble (Red Army Choir) singing a latin song.
https://www.youtube.com/watch?v=lyTPJK_X8g4
I can sing Katyusha, I learned the letter, I really like that song. I wanted to learn Korobushka, I know only the begining: later is really hard, like opera singers.
Is nice to see how culture can cross continents.
Well, I salute you, see ya