Death Cab for Cutie’s music has long had a certain innocence to it; a boyish, vulnerable charm that feels unmistakably collegiate. When the Bellingham, Wash., band broke big in the early ’00s, its records played like the soundtracks to breathless long-distance romances between young adults who’d always been just a little too smart for the rooms they were in. Hearing Death Cab’s music ringing over climactic scenes in The O.C. and Six Feet Under made all the sense in the world, because so few bands could convey Ben Gibbard’s gift for singing like his heart can’t quite fit in his chest.