Shakira to 'Bust Heads,' Usher Promises Strict Style on 'The Voice'

The dust has barely settled on Cassadee Pope's big win on "The Voice" last month, but with big changes in store for the show's fourth season -- most notably the addition of two new coaches -- it's never too early to look ahead. a press conference took place recently with those newbies, Usher and Shakira, as well as mainstays Blake Shelton and Adam Levine.

Shelton noted that with the departure of Christina Aguilera and Cee Lo Green, the dynamic has "definitely changed" and that throwing Usher and Shakira into the mix has ...