1) Works by Jewish and Jewish-origin composers, such as Felix Mendelssohn, Arnold Schoenberg, Erich Wolfgang Korngold, Kurt Weill, Gustav Mahler.
2) Works that featured Jewish or African characters (such as those by Ernst Krenek)
3)Works by composers of Maxist persuasion like Hanns Eisler
4) Composers who had shown sympathy for opponents of the Nazi Regime such as Anton Webern, who had maintained a friendship with Schoenberg during his exile from Germany.
5)Modernist music such as works by Paul Hindemith (ex. Mathis Der Maler 1934), Alban Berg, Schoenberg, and Webern
6)Jazz music, because of its roots in and association with the African- American culture.