Usher and Shakira's First Day - The Voice

UNDATED -- As NBC's "The Voice" kicks off its fourth season, the best surprise isn't only what is going to be in front of the spinning chairs, but who will be sitting in them. Check out this video below as Christina Milian sits with these newbies, Usher and Shakira, as they discuss what they will bring to the table this new season. "The Voice" will premiere on March 25 at 8/7c on NBC. It will air weekly Mondays and Tuesdays at 8.