A studio collaboration between "The Voice" co-stars Cee Lo Green and Christina Aguilera recorded long before the two signed up for the NBC talent competition is finally making its way to the public. After the song, titled "Nasty," surfaced online this week, Green confirmed its existence during "Late Night with Jimmy Fallon" saying it was supposed to make the cut for Aguilera's  film "Burlesque," but was ultimately shelved.

"We did a song together about a few years ago," Green said. "It actually was supposed to make the 'Burlesque' soundtrack, but it didn't make it...I've been seeing people tweet about it lately, so I think they're going to release it."

Have you heard "Nasty" yet? If so, what do you think of the song?

(Photos from left: Stephen Lovekin/Getty Images, Neilson Barnard/Getty)