Bon Iver is the name singer/songwriter Justin Vernon uses for his ambitious, deeply introspective and artful music that helped invent indie folk and continues to subvert and reinvent both the form and his own music. His debut album -- For Emma, Forever Ago -- established his initial sound perfectly; the gentle strumming of acoustic guitars, subtle arrangements, and Vernon's swooning falsetto combined to create a mood that felt like backwoods Radiohead recorded by candlelight. The record resonated with a great many people, and Vernon became a sensation -- feted by outlets as di...