Video: Christina Aguilera Performs 'Crazy' with Cee Lo Green

The judges of NBC’s “The Voice” joined forces to pay homage to one of their own. Christina Aguilera, Adam Levine, and Blake Shelton hit the stage with Cee Lo Green to perform an all-star cover of his Gnarls Barkley smash “Crazy.” Xtina held court by leading the group with the ATLien, while the Maroon 5 frontman held it down on the drums and Shelton rocked out on the guitar.

Check out the quartet going “Crazy” before the show debuts on Tuesday at 9 p.m. EST on NBC.