Союз композиторов СССР
The St. Petersburg Union of Composers, (Soyuz Kompositorov- Russian: Союз композиторов) is a professional and creative musical association with its headquarters at the former mansion of the Princess Vera F. Gagarina at 45 Bolshaya Morskaya Street, St Petersburg, Russia. It is a Department of the Union of Composers of the Russian Federation, formerly the Union of Soviet Composers.