Bruno Mars Became A Backup Singer While Mystikal Rapped On 'SNL'

Bruno Mars and Mark Ronson turned the "Saturday Night Live" stage into the funkiest dance club in New York City last night during the performance of their new hit, "Uptown Funk." But for Mars and Ronson's second song, a very unexpected guest joined the duo.

For "Feel Right," Mars took the backseat and joined his backup singers while rapper Mystikal took over. For those who remember, Mystikal is the rapper best known for the early '00s songs "Shake Ya Ass" (or the edited version, "Shake It Fast"), "Danger" and "Bouncin' Back." Mystikal is back and used his aggressive rap-yelling to bring a lively James Brown-esque vibe to the "SNL" stage for "Feel Right."

Watch the full clip above as Mystikal raps and Mars twirls and sings in the background, trying to pretend he's still not the star of the show.