The Blue Angel The Blue Angel The Blue Angel () is a 1930 German tragicomedic film directed by Josef von Sternberg and starring Emil Jannings, Marlene Dietrich and Kurt Gerron. Written by Carl Zuckmayer, Karl Vollmöller and Robert Liebmann – with uncredited contributions by Sternberg – it is based on Heinrich Mann's 1905 novel "Professor Unrat" ("Professor Garbage") and set in Weimar Germany. "The Blue Angel" presents the tragic transformation of a respectable professor to a cabaret clown and his descent into madness. The film is the first feature-length German full-talkie and brought Dietrich international fame. In addition, it introduced her signature song,
Marlene Dietrich dress"—a heavily beaded evening gown of silk soufflé, which gave the illusion of transparency—designed by Jean Louis, attracted a lot of publicity. This engagement was so successful that she was signed to appear at the Café de Paris in London the following year; her Las Vegas contracts were also renewed. Dietrich employed Burt Bacharach as her musical arranger starting in the mid-1950s; together, they refined her nightclub act into a more ambitious theatrical one-woman show with an expanded repertoire. Her repertoire included songs from her films as well as popular songs of the day. Bacharach's arrangements helped to disguise Dietrich's