When the Soviet Union was created in 1922 from a merger between Russia and other neighbouring soviet communist republics, the new national anthem that was in use was the "Internationale", a socialist anthem written in the late nineteenth century by two Frenchmen, Arkady Yakovlevich Kots (lyrics) and Pierre Degeyter (music) This song was already in use as Russia's de facto anthem due to it being the party song of the Bolsheviks who seized power in the 1917 October revolution and, with Russia being the leading republic in the union, it was their anthem that would be used. "The Internationale" was never formally adopted by the Soviet Union as a national anthem (though it was formally adopted as the party anthem of the Communist Party of the Soviet Union), yet was used on a de facto basis.
"The Internationale" has since been used by a variety of communist, socialist, and other left-wing groups as their anthem, making it the unofficial anthem of socialism. (It was also used, ironically, by Chinese demonstrating against their Communist government during the protests of 1989, leading to it being banned within Communist China.) It is traditionally sung with the right hand raised in a clenched-fist salute. It was in use until 1944 when a new anthem, "Hymn of the Soviet Union" was adopted.
Patriotic Song of Russia click here
Hymn of the Russian Federation click here
Above is a postcard with a score of USSR's "Internationale".