Some 20 years ago, My Morning Jacket’s Jim James, M. Ward, and Bright Eyes’ Conor Oberst and Mike Mogis got together for a revue-style tour that made quick friends. Nicknamed Monsters of Folk by their then-tour manager, the supergroup reconvened five years later and set out to work on their self-titled album together. The eponymous record is being reissued  for its 15th anniversary and features a handful of unreleased tracks, including the trippy Springsteen-tinged sound of “Disappeared.”