Towards the end of his life, Eric Dolphy told an interviewer: "When you hear music, after it's over, it's gone in the air; you can never recapture it again". It's a much-quoted comment, but posterity has reversed it. Dolphy's music survives and is increasingly admired, while his short life seems to have vanished into the ether, little examined and less understood. In Gone in The Air, Brian Morton tells a story that begins in California in the...