Gorillaz: Roundhouse, London NW1

NOT LONG AGO, Damon Albarn's reaction when asked about his involvement with Gorillaz was coyly to keep his counsel. At the concert that launched them almost a decade ago, the virtual group conceived by Albarn with Jamie Hewlett performed behind curtains to an audience that had no frame of reference for what its creators were trying to achieve. The history of cartoon bands had begun with The Archies and stalled at Jive Bunny, yet Gorillaz was a stroke of conceptual genius. It ferried a fame-weary Albarn out of Blur and on to the sort of American success that his arch-rivals Oasis could only imagine.