text: In the 1920s , Kurt Adler , Wilhelm FurtwÃ ngler , Erich Kleiber , Otto Klemperer , Alexander von Zemlinsky , Bruno Walter occupied the conductor 's post .
simplified: In the 1920s , Wilhelm FurtwÃ ngler , Erich Kleiber , Otto Klemperer , Alexander von Zemlinsky , Bruno Walter conducted .