Not sure what version that is, I'd SWAG that there are hundreds of versions over there from vintage classical to heavy metal to reggae
Update:
However, even though it sounds vaguely similar to L'Internationale, the music is: "Polyushko Polye" (Song of the Plains) performed by Red Army Choir:
https://www.youtube.com/watch?v=i2-c9MsrDH8This famous beautiful song was composed in Russia in 1933 by Lev Knipper and Viktor Gusev.
Different version on "Melodiya" records:
https://www.youtube.com/watch?v=r1pViSI4C44All versions start out and end with low volume, which slowly rises to a crescendo, then fades out. Probably simulating the sound of a group of marching soldiers,
singing, as they pass by, marching along, into battle.