Marlene Dietrich shot at Babelsberg film studios. Josef von Sternberg directed the film and thereafter took credit for having "discovered" Dietrich. The film is also noteworthy for having introduced Dietrich's signature song "Falling in Love Again", which she recorded for Electrola and later made further recordings in the 1930s for Polydor and Decca Records. In 1930, on the strength of "The Blue Angel's" international success, and with encouragement and promotion from Josef von Sternberg, who was already established in Hollywood, Dietrich moved to the United States under contract to Paramount Pictures, the US film distributor of "The Blue Angel". The studio sought
Marlene Dietrich del Río (whom Dietrich considered the most beautiful woman in Hollywood). The French singer Edith Piaf was also one of Dietrich's closest friends during her stay in Paris in the 1950s, and there were always rumors of something more than friendship between them. Greta Garbo has been commonly regarded as Dietrich's greatest film rival, but there is also a rumor of an affair between them. This rumor had its highlight in 2000 when writer Diana McLellan released her book "The Girls: Sappho goes to Hollywood". The author wrote that, in her research, she found proof of a never-before-reported affair between