During World War II in the Czech Republic was created a prototype concentration camp called Theresienstadt. In this camp thousands of Jewish artists were gathered so they could produce art, besides the forced labour, that could be used as propaganda by the Nazis. Among the others there was Viktor Ullmann, a famous music composer. The seven sonatas that he wrote for the piano were performed in the camp by the pianists Edith Kraus and Alice Herz-Sommer. In 2014, on the occasion of the recording of Ullmann's sonatas by the Spanish pianist Maria Garzon, the holocaust survivors Alice and Edith as long as many others talk about Viktor Ullmann as an artist and as a person.