Title: Der Protagonist : ein Akt Oper : Op. 15 = The protagonist : one act opera /
Authors: Weill, Kurt, 1900-1950; Kaiser, Georg, 1878-1945.; Stein, Erwin, 1885-1958.; Salter, Lionel.
Publisher: Universal-Edition,
Year: 1978
Subjects: Operas Vocal scores with piano