“Tsar Kaloyan”, an opera in three acts with a libretto by Fani Popova-Mutafova and Nikolay Liliev. Premiere: Sofia National Opera, April 20, 1936. Conductor: Assen Naydenov. Producer: Hristo Popov.
Music for August Strindberg’s play A Dream Play. Production: Deutsches Theatre, Berlin. Director: Max Reinhardt. Premiere: Stockholm, November 1921.