US pop band , Backstreet Boys ' members Nickolas Carter ( R ) and AJ Mc Lean perform on stage during their concert in Palacio de los Deportes pavilion , in Madrid , Spain , 23 April 2008 . EPA / ZIPI < 저작권자 ⓒ 2007 연 합 뉴 스 . 무단 전재 - 재 배포 금지 . >