Early last year, Justin Bieber posted a video dancing to a DJ Mustard collaboration he was working on! As much as I loved the sound of the new work, I didn’t realize that the beat was what would become Big Sean’s “IDFWU“! So what happened? How did Justin Bieber’s club turn-up become one of today’s biggest diss tracks? “We all just didn’t communicate; nobody communicated with my team,” DJ Mustard explained to MTV News. “There’s not no hard feelings or anything like that. It’s not a beef or no crazy sh*t like that, but we didn’t communicate. I was excited about the record.” So was I! Fortunately, the duo worked on a handful of tracks together! Fast forward a year, Justin Bieber, now a Calvin Klein model, prepares his fourth studio album. The controversial singer has been in the studio with everyone from Rick Ross and Chris Brown to Ariana Grande and Austin Mahone! Today, Bieber posted a photo in the studio with Grammy Award winning producer Rick Rubin, “working on some history.” Looks like Bieber’s almost ready to make his long awaited comeback! Check out Justin Bieber’s collaboration with DJ Mustard below!