Hans Holt as Mozart

Irene von Meyendorff as Aloisia Lange

Winnie Markus as Konstanze Mozart

Rosa Albach-Retty as Anna Maria Mozart

Paul Hörbiger as Von Strack

Curd Jürgens as Emperor Joseph II

Annie Rosar as Frau Weber

René Deltgen as Ludwig van Beethoven

Fritz Imhoff as Johann Georg Albrechtsberger

Walter Janssen as Leopold Mozart

Thea Weis as Sophie Weber

Richard Eybner as Baron von Gemmingen

Erich Nikowitz as Franz Xaver Süßmayr

Karl Blühm as Hoeffer

Erna Berger as Sängerin

Karl Schmitt-Walter as Sänger