Die Csárdásfürstin (The Riviera Girl; The Gipsy Princess) is an operetta in 3 acts by Hungarian composer Emmerich Kalman, libretto by L. Stein and B. Jenbach. It was premiered in Vienna, at the Johann Strauss Theater, 17 November1915. Numerous film versions and recordings have been made. Operetta (literally, little opera) is a performance art-form similar to opera, though it generally deals with less serious topics. ... Emmerich Kálmán (October 24, 1882 - October 30, 1953), also known as Imre Kálmán, was a Hungarian composer of operettas. ... A libretto is the body of words used in an extended musical work such as an opera, operetta, oratorio, or musical. ... Vienna (German: Wien [viːn]) is the capital of Austria, and also one of Austrias nine federal states (Bundesland Wien). ... November 17 is also the name of a Marxist group in Greece. ... 1915 was a common year starting on Friday (see link for calendar). ...