"Best $2k I Ever Spent!" Mark Ronson, DJ Premier, Skrillex & More Hit The 'Re:Generation Music Project' Hollywood Premiere

Mark Ronson Dap-tone overlord Mark Ronson was perhaps taken slightly less out of his comfort zone by being assigned to record a jazz track—while his normal tracks aren't really jazz, per se, there's at least some horn-based overlap—but he made sure to call in some big guns to help him out by recording his song in New Orleans, with the help of Erykah Badu, Mos Def, and Trombone Shorty. [instagram via @tasyavanree]