Now we have another duet, APT, which Mars has recorded with K-pop star and Blackpink member, Rosé. Named after a Korean drinking game, it’s a chugging three-minute pop-punk groove that has Mars (in the video, at least) playing the drums and guitar; Rosé also takes a turn on the kit, and is spotted playing bass, too.

ROSÉ is launching her solo era, and she's bringing one of pop music's biggest names along for the ride. On Thursday (Oct. 17), the BLACKPINK star and Bruno Mars announced that they're teaming up on a new single titled "Apt.