Leben des Orest is a grand opera in five acts with words and music both by Ernst Krenek. It is his Op. 60 and the first of his own libretti with an antique setting. Wikipedia
Composer: Ernst Krenek
Librettist: Ernst Krenek
Adapted from: The Oresteia, Iphigenia in Aulis, and Electra
Premiere: 19 January 1930; Neues Theater, Leipzig