 Complete the following phrase:  From 1935 he taught at the Budapest City Music School. From 1941 to 1944 he was professor of composition and director at the Conservatory of Kolozsvár today Cluj-Napoca in Romania and he conducted the citys Opera Chorus. At the end of 1944, because of the war, he had to flee to Budapest, where he worked as the deputy conductor of the Royal Opera Chorus during the 