Jewish composers such as Felix Mendelssohn and Gustav Mahler were disparaged and condemned by the Nazis.
[2] The Nazis also regulated jazz, including the banning of solos and drum breaks, scat, "Negroid excesses in tempo" and "Jewishly gloomy lyrics".
[3] From the Nazi seizure of power onward, these composers found it increasingly difficult, and often impossible, to get work or have their music performed.
Many went into exile (e.g., Arnold Schoenberg, Kurt Weill, Paul Hindemith, Berthold Goldschmidt); or retreated into "internal exile" (e.g., Karl Amadeus Hartmann, Boris Blacher); or ended up in the concentration camps (e.g., Viktor Ullmann, or Erwin Schulhoff).
One of the first of these was organized in Düsseldorf by Hans Severus Ziegler, at the time superintendent of the Deutsches Nationaltheater Weimar, who explained in an opening speech that the decay of music was "due to the influence of Judaism and capitalism".