Justin Bieber - Justin Bieber Raps On Chris Brown's Mixtape

05 August 2011 19:05Teen pop sensation Justin Bieber is testing his rap skills by collaborating with Chris Brown on the R&B singer's first hip-hop mixtape.

Picture: Justin Bieber shopping at Armani Exchange in Sunset Plaza Los Angeles, California .... 

Brown has recruited his young friend to join him on new release Boy in Detention, his first as a rapper.

The Baby hitmaker has previously adopted the rap moniker Shawty Mane and he is reintroducing fans to the alter ego on Brown's mixtape and on another track with rising hip-hop star Asher Roth.

In a recent post on Twitter.com, Bieber wrote, "Did a lil something on the upcoming @chrisbrownmixtape. Ladies love me. then we got crazy on the @asherroth album. #shawtymane"

But Bieber has no plans to ditch his pop roots.

He tells Xxl magazine, "I just do it for fun, but nothing serious. I don’t think people would take me seriously if I came out with, like, a rap album."