After 1945 he resumed film-making . On 3 July 1947 he set up in Salzburg , with the support of the Creditanstalt , the film production company Neue Wiener Filmproduktionsgesellschaft . One of his most acclaimed films of this period was '' Der Engel mit der Posaune '' ( " The Angel with the Trombone " ) in 1949 , which brought together many compatriot Austrian stars : Paula Wessely , Attila and Paul Hörbiger , Oskar Werner and Maria Schell . His later films included '' Weg in die Vergangenheit '' ( " Way into the Past " ) from 1954 and '' Mozart '' , which entered the 1956 Cannes Film Festival
1956 Cannes Film Festival
1956 Cannes Film Festival
Karl Hartl