Der Opernball is an operetta in three acts with music by Richard Heuberger, and libretto by Viktor Léon and Heinrich von Waldberg, based on the 1876 comedy Les Dominos roses by Alfred Delacour and Alfred Hennequin. Wikipedia
Composer: Richard Heuberger
Librettist: Viktor Léon
First performance: January 5, 1898
Language: German