Sadly, it seems Crosby, Stills & Nash (and occasionally Young) are now definitively over in any form. First there was Young’s feud with Crosby over comments the former Byrd made about his girlfriend Daryl Hannah, and then Graham Nash took aim at Crosby too with a series of expletives. It is now, finally, over. But, on this Bank Holiday Monday as a third-rate musical about the legend of King Arthur pops up on television, we’re reminded of an all together more magical time – when rather than slagging off his band mates, Crosby wrote songs like ‘Guinevere’.