*Justin Bieber jumps on Chris Brown’s just-released “Boy in Detention” mixtape, rapping on the track “Ladies Love Me,” which samples Brown’s “Look at Me Now,” produced by David Banner. [Scroll down to listen.]

Biebers lyrics include, “Baby, I’m your doctor/ I could be your rocker/ Swaggin’, I’m not braggin’ but I swear that I could rock ya, baby/ I’m not crazy/ I got swag like Patrick Swayze.”

Bieber and Brown were spotted in the studio last month, and many fans were wondering what they were up to, reports MTV. This release marks Brown’s first-ever rap mixtape release.

In addition to Bieber, it features appearances from Tyga, Dawn Richard, Wiz Khalifa, Swizz Beatz and Kevin McCall, to name a few. 9th Wonder, DJ Chuckie and No I.D. are a few of the producers who get credits on the mixtape.

This isn’t Bieber’s first foray into the world of rapping. He rapped on the Sean Kingston track “Won’t Stop” and spit some rhymes as Shawty Mane in a Twitter video he posted last year.