Justin Bieber is growing up from pop sensation with his newest single "Boyfriend," which is being compared to Justin Timberlake and the Ying Yang Twins. This will be Justin's first single off his upcoming album, Believe.

The track, produced by Mike Posner, was given a first listen by Mick Lee, a DJ on Baltimore's Z104.3, who gave fans a little hint of what to expect.

"Wow....so much different than his previous music," wrote Lee. "AND get this... he raps...best comparison is it sounds like 'Wait' by the Ying Yang Twins."

Could this be Justin's segway into hip-hop?