The Song of the Flame.

This was a screen version of the 1925 operetta by Oscar Hammerstein II, Otto Harbach, Herbert Stohart, and George Gershwin. The story of the movie is about a peasant who is known as "The Flame" who leads a revolution in Russia. This peasant who is in love with a Russian prince saves his life by agreeing to sacrifice her virginity to an evil fellow-conspirator. This was an all Technicolor musical which was had a sequence in Vitascope (a Warner Brother's wide screen process)