Simon Critchley first encountered David Bowie in the early seventies, when the singer appeared on Britain’s most-watched music show, Top of the Pops. His performance of “Starman” mesmerized Critchley: it was “so sexual, so knowing, so strange.” Two days later Critchley’s mum bought a copy of the single; she liked both the song and the performer’s bright orange hair (she had previously been a hairdresser). The seed of a lifelong love affair was thus planted in the mind of her son, aged 12.