From the streets of the garrison town of Terezin, Jeremy Harding tells the story of the extraordinary Jewish musical life that flourished there in the dark times of the Second World War, when a Nazi concentration camp was established in the town. It suited the Nazis to have a "show camp" to display to the Red Cross and other outside organisations; operas and jazz cabarets were regularly performed. Many pieces of music composed during the period survive - but the truth was that once the delegations had left, the performers were sent to Auschwitz.