Robert Pattinson and Katy Perry get down together on a slow and sexy rendition of an old fave.

Katy Perry and Robert Pattinson duet? A YouTube video just surfaced of the two stars singing together at a local karaoke bar.

And Robert Pattinson is singing the lead.

Robert Pattinson and Katy Perry shared a mic to give a warm karaoke rendition of "I'll Make Love to You" in a dark Los Angeles bar.

Okay, so the video is from 2008 and it was shot at a birthday party that a friend was throwing at the Los Angeles karaoke bar Dimples, but the video is new. Who knew Robert Pattinson was such a big fan of Boyz II men?

Robert Pattinson, the star of the "Twilight" vampire movie series, isn’t that scary at the mic. Katy Perry only throws in the occasional harmony as she tries to keep her balance. Pattinson is better known by his on again off relationship with Kristen Stewart. Robert Pattinson and Kristen Stewart were reportedly on again at the time, but that’s not her sitting in Pattinson’s lap and doing harmonies.