There's no telling why this band chose to call itself Arboles Libres ("Free Trees"), but it does convey a sense that they're freely breaking down barriers on this five song set. Singing in both Spanish and English, the group proffers a sound that freely mixes a feeling of folk finesse -- as reflected on the song "Aurora" -- with the edgier, upbeat approach of "Yellow Man" and "Comiensos (The Beginning)." Boasting a knowing attitude that occasionally blurs the line between melody and mayhem, a...