The Nash Ensemble presents a program of works written at the Theresienstadt concentration camp by four Jewish composers who went on to be killed at Auschwitz, their music forgotten. In recent years, it has begun to be performed again and its extraordinary quality appreciated. One of the most popular works was Hans Krasa's enchanting children's opera Brundibar, performed fifty-five times at the camp and presented here as a suite arranged by the composer David Matthews. Viktor Ullmann is represented by his String Quartet No.3, a lyrical, sumptuous work with a wistful quality, influenced by the Second Viennese School. Pavel Haas studied with Janacek and his vividly atmospheric String Quartet No.2, subtitled From the Monkey Mountains, not only shows the influence of his teacher but also displays a unique musical personality.