You don't always need a lot of sound to evoke a lot of feeling. Bon Iver, aka Justin Vernon, knows that all he needs to wreck people is his acoustic guitar and his falsetto. He wrote a whole album in a cabin once and it put him on top of the ranks of indie folk. Here he is performing track one off of For Emma, Forever Ago on 89.3 The Current. He's just a guy in a hat with a guitar, but he packs a lot of sad.