It opened with Costello singing, and beautifully, 'Every Breath You Take', a Police number, of course. Then the Policemen came on one by one, each representing a facet of the band's warring personality. Andy Summers was quiet and learned, no trouble at all. Stewart Copeland, the barmy American drummer, loudly claimed the band for himself. But the ownership dispute was quelled by the arrival of Sting, exuding authority, charisma and, less expectedly, humour. It could have been a schmaltzy love fest or nerdishly technical. It wasn't. It had lightness to it, as well as a sense of occasion. Costello, his face framed by a fedora and sideburns, proved an able interviewer, his skills honed from standing in for David Letterman...