It’s a rule of life that adults shouldn’t understand young people’s music, ever since Little Richard made the old folk fume with his incessant and enigmatic cries of ‘A-wop-bop-a-loo-bop-a-lop-bam-boom!’ I bitterly recall when during my adolescence my father – a highly respectable Communist factory-hand who would rather have voted Tory than sworn in front of a woman – took a mysterious liking to all the outrageous acts I was crazy for, from Roxy Music to Sparks.