Singer Usher poses for photographs in his dressing room before appearing on the "Ellen DeGeneres Show" to promote his new album "Here I Stand" at NBC studios in Burbank, Calif, May 14, 2008. (AP Photo/Gus Ruelas)
February 2, 2010 12:08:39 PM PST
NEW YORK (AP) - February 2, 2010 --
Grammy Award-winning singers Alicia Keys and Shakira will perform during halftime of the NBA All-Star game.