“The first thing you may want to know about the mystery band Jason Feathers is that it features Justin Vernon, aka Bon Iver. The second is that their album, De Oro, is a hybrid of swamp-rock and rap that trades on myths of the southern United States as a sinister place where laws are flexible, morals are optional and pleasure is central. The third thing is almost a foregone conclusion, and best stated as a question: Why?”