“And now, ladies and gentleman,” drawls Keith Richards, “dig The Who.”  It is December 1968, and the Rolling Stones are staging their Rock and Roll Circus television special. The Who are about to deliver a version of ‘A Quick One, While He’s Away’ so incendiary that Mick Jagger, concerned that his own band’s performance is inferior, will delay the programme’s release for 28 years.  Keith Moon dominates the camera, mugging during the a cappella intro before his thunderous crash cymbals drown out Pete Townshend’s riffing, John Entwhistle’s thudding bass and Roger Daltrey’s machismo. Here then is the epitome of the…