The 4 1931 film versions of Isfan Békeffy's operetta offer an interesting tangle. Wilhelm (later William) Thiele directed the German and French version, while Renate Muëller starred in the German and English complex production number that Thiele used in the German film, with Renate singing through the streets, up a staircase, and into her room. The French version, directed by the director of the German version, does not, substituting a much cheaper scene of the leading lady (Marie Glory) entering her apartment before she starts singing. The German and English versions may have been filmed simultaneously in Germany, using the same set and camera set-ups. The French and possibly Italian versions were then filmed in France, directed by Thiele for the French and Goffredo Alessandro for the Italian.
Paula Wessely applied for the main role that finally went to Renate Müller. It would have been her first part in a movie as she exclusively worked at the theatre until 1934.