If you wanted to maximize the commercial and cultural value of the Twilight Sad, you would need a DeLorean with the date January 1, 1980, plugged into its coordinates. The group has managed to soak up the finest of 1980s underground rock, alternately making waves of eardrum-punishing shoegaze, going as creepy and chilly as any post-punk or industrial band worth its black T-shirts, tinkering with sincerely sweet indie pop and — in a crowning touch — covering both the Smiths and Joy Division. With James Graham's somber, smoky brogue leading the charge, this Scottish trio would have been a titan of the Reagan era.