In 1943, German SS officers in charge of Auschwitz-Birkenau ordered that an orchestra should be formed among the female prisoners. While still living amid the most brutal and dehumanising of circumstances, they were also made to give weekly concerts for Nazi officers, and individual members were sometimes summoned to give solo performances of an officer's favourite piece of music. What role could music play in a death camp? What was the effect on those women who owed their survival to their participation in a Nazi propaganda project? And how did it feel to be forced to provide solace to the perpetrators of a genocide that claimed the lives of their family and friends?