Использованы средства гранта РФФИ № 19-012-00615 Русская революционная песня в первые десятилетия советской эпохи: от фольклора революции к советскому идеологическому проекту (2019-2021 гг.)

This site is mainly about the 20th century Russian and Soviet pop song. First of all, it allows to find different versions of songs and compare them.

See also:

Russian-Record.com - you can listen to phonograph records

Sheet music in the National Library of Russia - you can see file cabinet in Russian, not full documents
Sheet music in the Russian State Library - you can register and buy scanned sheet music

Contact: dzanni@gmail.com, Rustam Fakhretdinov