Biffy Clyro might have begun life with their roots in prog-metal, but their sixth album continues their move to a more polished, arena-friendly sound. Indeed, the anthemic likes of The Thaw and Biblical wouldn't sound out of place on a Snow Patrol album. However, more interesting fare lurks on the second disc of this double-CD package: the mariachi trumpet flourishes on Spanish Radio are a nice touch, while the ferocious Modern Magic Formula pulls no punches. But across 80 minutes there's the sense they might have spread themselves too thinly.