On Start the Week Carrie Cracknell talks to Jonathan Freedland about her new production of Berg's opera, Wozzeck, and the descent of the central character into madness and despair. The pianist Jonathan Biss looks at whether Schumann's later music reflects the troubled state of his mind. The psychiatrist's diagnostic bible is to be updated later this month, and Tom Burns and Richard Bentall discuss the controversies that continue to dog the world of psychiatry. Producer: Katy Hickman.