Erich Pommer in Berlin, was produced in a German, English, French, Hungarian as well as a silent version. The film also created the Operetta film genre. The "Erich-Pommer-Produktion der Ufa" turned out several international box office hits in the following years, most notably Josef von Sternberg's "The Blue Angel" (1930), starring Marlene Dietrich. Among his productions was a series of popular musical comedies such as "Die Drei von der Tankstelle" and "Der Kongreß tanzt" / "Congress Dances" and the science fiction spectacle "F.P.1", which was shot in three language versions. After the Nazi Party came to power early in 1933, UFA rescinded
Marlene Dietrich Crawford, Mae West, Katharine Hepburn, Norma Shearer, Dolores del Río and Fred Astaire among others. While she was in London, officials of the Nazi Party approached Dietrich and offered her lucrative contracts, should she agree to return to Germany as a foremost film star in the Third Reich. She refused their offers and applied for US citizenship in 1937. She returned to Paramount to make "Angel" (1937), another romantic comedy directed by Ernst Lubitsch; the film was poorly received, leading Paramount to buy out the remainder of Dietrich's contract. In 1939, with encouragement from Josef von Sternberg, she accepted producer