The pair's new collaboration is "Hello," a track from T.I.'s upcoming "Trouble Man: Heavy is the Head." "There's some jealousy in your rearview, wave hello," Cee Lo sings to the haters on the Pharrell-produced track. The track shifts from a laid-back chorus to the percussion-heavy verses, cruised over by the boastful MC. "Won't stop until we poppin' bottles at the finish line," T.I. raps.
The MC's album is due Dec. 18.
Hear "Hello" below: