The Copper Children hail from Denver, and their music is certainly influenced by the kind of airy free spirit that only the Rocky Mountains can foster. Their sophomore album, What We Are, continues in the folky vein of their 2014 debut, delivering nine tracks that go down easy and highlight lead singer Zea Stallings’ clear, crisp vocals and the band’s ear for harmony and familiar-sounding melodic shapes. Opening track “Oh Climb Ye Mountain” recalls the pastoral side of The Head and the Heart and introduces the welcome earnestness that pervades the record. Later, the group works in some gospel influences with the old-timey stomp of “Mysterious Ways,” and the percussion and acoustic strumming of “Lose Feeling” sound a bit like a Jack Johnson tune with a more adventurous singer at the helm. “Jack and Ginger” finds the band showing off their fun side, while “This Is Heaven” rides the gentle wave of a well-crafted song, easing in with sparsely fingerpicked guitar and building to a beautifully understated, cello-assisted climax. It proves to be one of the album’s high points.