Christina Aguilera and Cee Lo go 'Crazy'

This is one of those performances that you will always remember. Christina Aguilera, Cee Lo Green, Adam Levine and Blake Shelton teamed up to do a cover of Cee Lo's smash hit "Crazy" as an intro to their new NBC show, "The Voice."

As first look, "The Voice" seems like "American Idol," where the judges are looking for the next big star. On the contrary, this show has a twist to it because the judges choose singers based solely on their voice and not their looks. A cool concept to take the vanity out of the industry and focus on the talent.

Check out the video below of the celebrity panel of judges showing off their vocal skills to Cee Lo's "Crazy."

"The Voice" premieres at 9 p.m. Tuesday, April 26, on NBC.