If you haven't seen it, it's worth reading. He's a pianist himself, and he details his whole career of looking at and observing incredibly powerful effects that music has had on peoples' lives in unusual situations.
是非お読み下さい　 著者自身 ピアニストです この本で彼は 自らの体験から 尋常でない境遇におかれた人々に対して 音楽がいかに大きな影響を与えたか 述べています