Mike Posner is a busy man. That’s what you’re left with after this clip from the upcoming rock-doc, “No Room for Rockstars.” The documentary, which is premiering at the independent film festival Slamdance, brings viewers an in-depth look behind the scenes of the Vans Warped Tour and the many musicians playing on it. The crew … Continue reading “MTV: Mike Posner Opens Up In ‘No Room For Rockstars’ Clip”