‘The Voice’ Begins Tonight With Blake Shelton & Two New Judges [VIDEOS]

The fourth season of 'The Voice' begins tonight with two new judges.  Blake Shelton and Adam Levine return to show newcomers, Usher and Shakira how its done.  Adam won the first season, while Blake won the last two.  Will you be rooting for Team Blake? 

Tune in to NBC at 8 tonight.  Get your first look at what's in store for Season four and see what the coaches will be looking for this season.