Cee-lo Green - Cee Lo Green To Challenge Pal Blake Shelton In The Christmas Charts

The Forget You singer insists he had no idea his friend was working on a seasonal project until he was wrapping up his own musical gift to fans.

Shelton's holiday album will feature duets with his mother and Michael Buble, while Green's project will feature a quirky new rendition of You're a Mean One, Mr Grinch!

The country star wishes his pal well but Shelton's confident he'll get closer to number one with his family-friendly album: "Santa loves me a hell of a lot more than he loves Cee Lo... Actually, Cee Lo has a guy on his team that looks a hell of a lot like Santa this year, now that you mention it. I may be totally out of place saying all that."