A boy band who wowed music mogul Simon Cowell on X Factor USA are to headline Family Centre’s annual Beach Bash. Pop-tinged R’n’B trio AKNU won fans from their initial audition thanks to an exciting version of The Zutons’ hit Valerie — complete with slick Michael Jackson-style dance moves.Cowell described them as “like Motown all over again” and said he “could watch this whole audition again”.“I really like them,” he added. Judge Kelli Rowland, of Destiny’s Child fame, called AKNU, which stands for A Kind Never Understood,