Following the Nazi occupation of Austria in 1938 , as a Jew he was forced to leave .
Following the Nazi occupation of Austria in 1938 , as a Jew he was went to the Chicago City Opera Company as assistant chorus director where he worked for five years .
Following the Nazi occupation of Austria in 1938 , as a Jew he was forced to leave and went to the Chicago City Opera Company as assistant chorus director where he worked for five years .