Backstage at the Prudential Center in Newark, New Jersey, the veteran singer Charlie Wilson has a ziplock bag full of ice on his right knee. The joint was tight when he woke up the day of his performance there last Friday, and it worsened rapidly during a morning exercise routine. "I'm a wounded warrior," he says, though he doesn't look it, beaming and unflappable in dapper slacks and
This article originally appeared on www.rollingstone.com: R&B Veteran Charlie Wilson Talks Four Decades of Chart Success