Justin Bieber Previews DJ Mustard Produced Song (Video)

Beamber Biebs is about to bless again. Justin Bieber has been locked into the studio the past few days, and today he posted this video on Instagram, which features an unreleased track featuring himself going over a DJ Mustard beat. Yeah, this thing is going to slap, to say the least. We’re waiting, Lord Biebs.