Fleet Foxes built up a considerable amount of hype with the well-received Sun Giant EP in 2008, but it only hinted at the critical acclaim their eponymous debut LP would enjoy. Channeling classic folk acts like Crosby, Stills & Nash as much as indie darlings like Animal Collective, the group's vocal harmonies and lush arrangements found instant crossover appeal. Building on their success, 2011's Helplessness Blues embraced a sophisticated and melodic vibe to widespread critical acclaim.