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Austrian audiences never seemed to tire of escapist operettas, and director Ernst Marischka never tired of grinding 'em out. Based on the popular stage attraction of the same name, Der Opernball (The Opera Ball) stars Johannes Heesters as faithful family man Georg Dannhauser. Georg's wife Elisabeth (Hertha Feller) trusts her husband implicity--but just to be on the safe side, she orchestrates an elaborate ruse to test his fidelity. To this end, Elisabeth enlists the aid of handsome Paul Hollinger (Josef Meinrad), who can best be described as a sexual adventurer. The outcome of the story is as predictable as the musical score is delightful.