Justin Vernon is a singer, songwriter, and producer most closely associated with the acclaimed indie band Bon Iver, which he launched as a solo project in 2007. The veteran Wisconsin musician had already amassed a significant back catalog by the time Bon Iver's home-recorded debut album, For Emma, Forever Ago, achieved breakout success in 2008. Features with Kanye West and a pair of Grammy Awards for Bon Iver's eponymous 2011 album followed, as Vernon expanded the project into a full band that experimented widely beyond its indie folk roots. He simultaneously branched out with...