Befitting a band permanently on tour, Biffy Clyro are well drilled, precise alt.rock shouters, now keen on extending their range. They shouldn’t have bothered. Recent Top 30 single “Glitter And Trauma” bizarrely mixes Buggles with Cheap Trick’s dafter moments. Elsewhere the prog-rock timescales, pompous a cappella tracks and cartoon synth crunches would make even Muse go crimson. A pity because, on the likes of “Only One Word Comes To Mind”, Biffy Clyro capture grunge’s emotionally bruised centre quite naturally.