From explaining how 'rhythmic auditory stimulation' can fight multiple sclerosis, to examining why Tracy Chapman's songs might just help cure PTSD, Professor Daniel Levitin explores how each of us can use music to calm our thoughts, repair our memories and heal our deepest psychological wounds. The result is both a surprising tour through the science of music, and a joyful celebration of humanity's oldest obsession. By the author of This Is Your Brain on Music.