Is it possible to call a progressive metal band playful? If so, then I Built the Sky are the most playful djent band I've heard in ages. From the laser beam flourishes of "Undulatus" to the upbeat, winky post-rock tint of "Fibratus", there's a ton of fun in I Built the Sky's form of instrumental metal. Don't mistake this album as a joke or throwaway release--it's almost completely, legitimately awesome; it's just also brimming over with a sense of fun, which seems to be so sorely lacking in the djent realm today.