 Complete the following phrase:  In the 1920s, Ettinger was very successful as a composer, his literary operas were performed in Nuremberg, Hamburg, Munich, Kiel and Leipzig. He also worked again as a conductor in Leipzig 19201929 and Berlin 19291933. In 1933, he emigrated to Switzerland with Austrian nationality because of his birth in Lemberg and settled in Ascona, where he already owned a house. With the 