Viktor Ullmann was an Austro-Bohemian composer, pianist and conductor who trained in Vienna and began his composing career in the 1920s within the European modernist classical tradition. He wrote songs, chamber music and operatic works that drew on late-Romantic, expressionist and early twelve-tone techniques, and his later compositions—including an opera composed in the Theresienstadt ghetto—are part of the cultural record of artists persecuted under the Nazi regime.