What happens when Justin Bieber and Justin Bieber 2.0 get together? Does the world explode? Well, we're about to find out.

Justin Bieber and Austin Mahone both posted pictures to their Instagrams this morning in the studio with Birdman and Mack Maine. 17-year-old Mahone burst onto the YouTube scene in 2011 and garnered instant comparisons to Bieber, many positing that he was the second coming.

So far we only have a picture, but The Biebs did caption his "New music #YMCMB."

Hear that sound? It's the collective squeals of Beliebers and Mahomies everywhere...