Nas is back -- and he's got his friend Cee-Lo in tow. The R&B/rap duo collaborated on the song 'Less Than an Hour,' which appears in the movie 'Rush Hour 3.'

"Nobody brings it like Brett Ratner," Nas says. "He's the street-smart director and he knows his audience. I'm just happy Chris Tucker is back. It's not every year that we get to see him on the screen. Chris and Jackie Chan together again is what we've all been needing! It's a honor for me to play my part musically in the film."

'Less Than an Hour,' will also be the lead single off of Nas' forthcoming greatest hits album, due out in November. 'Rush Hour 3' opens today. Get showtimes and tickets

Listen to 'Less Than an Hour' by Nas and Cee-Lo