Brussels, Opera Royale de la Monnaie. 12 May 1916. Performance by an all German cast during German Occupation of Belgium in World War I. Walther Kirchhof, Karl Amster, Theodor Lattermann, Julius Roether, Marcella Röseler, Frieda Langendorff, Zdenka Mottl-Fassbender, Marta Weber-Neubeck. The orchestra was composed by Belgian and German Army Bands. Conductor : Richard Hagel.