"Es war einmal am Hofe von Eisenach", Song of Klein-Zack from the opera "Les Contes d'Hoffmann" ("The Tales of Hoffmann") "Es war einmal am Hofe von Eisenach", Song of Klein-Zack from the opera "Les Contes d'Hoffmann" ("The Tales of Hoffmann") Main opus "Les Contes d'Hoffmann" ("The Tales of Hoffmann"), Opera in five acts