Mike Posner has been working on his new music in the studio lately with his buddies Mat “Blackbear” Musto (songwriter/producer) and Mason “MdL” Levy (producer), as well as Jerrol “Boogie” Wizzard (songwriter/producer). Check out a recent Tweet by Blackbear, as well as Instagram photos by Blackbear and his manager from the studio sessions! Tracking toy…