For the lucky few in attendance at Bon Iver’s Muddy Waters performance last March, it’s easy to understand the hype behind this Wisconsin-based folkie. But even one spin through Iver’s sparkling 2007 debut, For Emma, Forever Ago, should cause most listeners to take heed. Born Justin Vernon, the artist now known as Bon Iver has an unarguable knack for penning tunes that resonate, and his latest EP is no exception. At just under 17 minutes long, Blood Bank moves between affected piano compositions and distorted harmonizing. On the standout “Woods,” Iver’s voice is layered over itself, fluctuating between a smooth baritone and a high-pitched howl, which all manage to play perfectly against quiet, driving organ parts. It’s a short jaunt through the mind of a master, but Blood Bank definitely leaves its mark and will undoubtedly keep fans wanting more.