A week after the Kaiser Chiefs released their third record, the Mark Ronson-produced Off With Their Heads, frontman Ricky Wilson is stomping on a new leather jacket in the artists' lounge at BBC Radio 1. The band is here to play four songs from the disc, which debuted on the U.K. charts at Number Two, behind AC/DC's Black Ice. But Wilson — a dandyish 30-year-old in a pinstriped suit — isn't wholly satisfied with his purchase. "It looks too new," he says, applying scuffed boot to...