Gnarls Barkley, made up of Cee Lo Green and producer Danger Mouse, will return to the studio in the near future to record the follow-up to 2008's "The Odd Couple".

"Gnarls Barkley, of course, it's an enigma, if you will... It's a monster. It's a noun. It's a person, place and thing, you know what I'm saying?," Green told CNN.

He added: "So when I'm emotionally able to go back in that hole in the wall, I'll go back in there. And Danger Mouse will be waiting for me, Afro intact."

Meanwhile, Cee Lo Green has revealed that he could become one of the new US X Factor judges.

(by Holly Frith)