There is a neat Sheryl Crow song about a hippie chick that begins “She was born in November 1963 / The day that” – and you think she is going to sing “Kennedy died”, but it actually goes “Aldous Huxley died.” It was, as a matter of fact, the same day. Huxley finds his place in a rock song of the Nineties because he was one of the godfathers of the psychedelic experimentation of the Sixties. Indeed, the very word “psychedelic” was coined in correspondence between him and a psychiatrist called...