The evening of March 31, 1913 brings the Viennese audience to Weissglut. On the programme: Schönberg, Zemlinsky, Mahler. The audience hisses, laughs, and rattles their keys. They are shouting: whoever likes such music belongs in the asylum. Schönberg stops the music and calls into the audience that he would have every heckler forcibly removed, which leads to uproar. Oscar Straus, composer of the Operetta Ein Walzertraum steps forward and slaps Schönberg.