If you must to have some dude hanging out at your party on the couch with an acoustic guitar, may we suggest Justin Bieber ... there's really no telling what he'll cover next.

In his current role, Jack covers daily music news ... featuring superstars including Justin Bieber, The Weeknd and Mary J. Blige. "I present to you my new album. The Love Album: Off the Grid ...

Justin Bieber’s career started in 2008 when his mother uploaded videos of him singing cover songs on YouTube. The artist’s talent caught the attention of Scooter Braun, a talent manager, who helped ...