Before Mahler's music was banned as "degenerate" during the Nazi era, the symphonies and songs were played in the concert halls of Germany and Austria, often conducted by Bruno Walter or Mahler's younger assistant Otto Klemperer, and also by Willem Mengelberg.
Antes de que a música de Mahler fora prohibida por "dexenerada" durante a época nazi, as sinfonías e cancións foron interpretadas en salas de concerto de Alemaña e Austria, frecuentemente dirixidas por Bruno Walter ou o mozo asistente de Mahler, Otto Klemperer, e tamén por Willem Mengelberg.