How Much Do You Know About Taylor Swift's Latest Collab, Bon Iver?

When Taylor Swift announced the release of her surprise eighth studio album, she went ahead and credited everyone who helped her make it, as a true modest queen does. Part of the surprise was that indie folk band Bon Iver would be featured on one of the tracks, "exile" -- and let's just say right now that the song is nothing short of beautiful. Want to know more about this enigmatic band?