Christina Aguilera arrives at NBC's press conference for the their new Show "The Voice"

Singer Christina Aguilera arrives at NBC's press conference for the their new Show "The Voice" on March 15, 2011 in Los Angeles, California.

Singer Christina Aguilera and executive producer Mark Burnett arrive at NBC's press conference for the their new Show "The Voice" on March 15, 2011 in Los Angeles, California