January 27, 2020 marks the 75th anniversary of the liberation of the Auschwitz concentration camp. Looking back, in Viewed in the mirror of history, the composer Viktor Ullmann (1898-1944) is representative of a large number musicians, mainly of Jewish origin, who were imprisoned in the extermination camps of the National Socialist regime had to give their lives. The pianist Annika Treutler and the conductor Stephan Frucht dedicate themselves on the occasion of the 75th anniversary of her death. anniversary of the liberation of the KZ der Verfemten Musik and the composer Viktor Ullmann, who was himself imprisoned in the concentration camp Auschwitz.