BBC broadcaster Stephen Johnson explores how Shostakovich's music took shape under Stalin's reign of terror. Johnson writes of the healing effect of music on sufferers of mental illness and tells of how Shostakovich's music lent him unexpected strength in his struggle against bipolar disorder.Through interviews conducted with surviving members of Soviet orchestras, through his reading of philosophers, psychoanalysts, and neurologists, Johnson paints a compelling picture of one man's music and its power to validate and sustain another man's life.