A Waltz Dream (1925)
A Waltz Dream (German:Ein Walzertraum) is a 1925 German silent drama film directed by Ludwig Berger and starring Willy Fritsch, Mady Christians and Xenia Desni. It was based on the 1907 operetta Ein Walzertraum composed by Oscar Straus. It was influential on the development of later Viennese operetta films. Unlike many of UFA's ambitious productions of the 1920s, A Waltz Dream managed to recover its production cost in the domestic market alone.
More at Wikipedia.