This site is mainly about the 20th century Russian and Soviet pop song. First of all, it allows you to find print versions of a song (and compare them) or mention of print versions.

See also:

Russian-Record.com - to listen to phonograph records

Sheet music in the National Library of Russia - file cabinet only
Sheet music in the Russian State Library - you can register and order scanned sheet music

Rustam Fakhretdinov, dzanni@gmail.com