WATCH Christina Aguilera, Cee Lo, Blake Shelton And Adam Levine Go 'Crazy'

Credit: NBC

If you're going to judge a vocal competition like "The Voice," you'd better be good at your job. Needless to say, Adam Levine, Cee Lo, Blake Shelton and Christina Aguilera are all pretty good at what they do. And now they're all laying their cards out as judges on the new NBC show "The Voice," where they'll coach singers and crown a talented contestant with the ultimate title of The Voice (not to mention a whopping $100,000). The catch here, however, is that, initially, their backs will be turned to contestants, so their votes will be based solely on vocal prowess.

Of course, Christina, Blake, Adam and Cee Lo all look extremely different from one another (what we would give to see Christina and Cee Lo exchange wardrobe, just for a day), but each has one thing in common (aside from being famous): voice. (Get it??) This preview of the motley crue joining forces to cover "Crazy" (which Cee Lo originated with Danger Mouse as half of the pop outfit Gnarls Barkley) is nothing short of... well... weird. It's weird. And yet... we can't stop watching.