Shakira and Usher Will Be Cut-Throat On Upcoming Episodes of 'The Voice'
Description:Season 4 of 'The Voice' will have a new twist. Shakira and Usher will replace coaches Christina Aguilera and Cee Lo Green, the new coaches are not messing around. Mark Burnett confirmed that he competitiveness is at an all time high, calling Usher more "aggressive", and that Shakira is ready to 'bust some heads'. Season 4 of 'The Voice' kicks off on March 25th on NBC.(1:02)