Though Arbouretum is most commonly tagged indie rock, the Baltimore quartet should also be seen as belonging to the folk-rock continuum that stretches back to the '60s. As captured on The Gathering, Arbouretum's thick riffage and bass-heavy plod are reminiscent of vintage Crazy Horse. Meanwhile, singer, songwriter and ace guitarist David Heumann is a disciple of Richard Thompson. Much like his hero, he pens words that are as complex as his epic solos. For the best balance of lyrics and music check out "Waxing Crescents," which is also one of Arbouretum's most psychedelic offerings to date.