Amir Bar-Lev’s fascinating high-profile project asks leading contemporary musicians and producers to broaden their chops and play to a different groove. Skrillex joins the surviving members of the Doors; DJ Premier conducts the Berklee Symphony Orchestra(!) with Nas; the Crystal Method backs R&B singer Martha Reeves; Pretty Lights play with Dr. Ralph Stanley and LeAnn Rimes; Mark Ronson joins Zigaboo Modeliste! Music triumphs over all.