Even after several million albums sold, British art-rockers Coldplay are still conflicted about their status as an arena act, and that's one of their most endearing traits.
On the one hand, frontman Chris Martin and his bandmates do everything they can to maximize the big rock spectacle, the grand theatrical gesture and the musical bombast.
Concert review: July 2008 Archives

Tom Petty welcomes with open arms last night's sold-out crowd at Chicago's United Center. (Oscar Lopez/For the Sun-Times)
Two years ago, shortly after the release of the invigorating "Highway Companion," his third solid solo effort and the 18th album overall in a long and storied career, Tom Petty announced that he was swearing off large-scale arena tours for good.
But on Wednesday, there he was again at age 57, leading the Heartbreakers through a satisfying two-hour set at a sold-out United Center, and with his laconic charm and trademark nasal twang as oddly endearing as ever.
