Mirrored Battles Warp/ Inertia WITH three EPs and four years of touring behind them, American band Battles have finally released their debut album. By upping the volume and ditching minimalism, their polyrhythmic rock has grown more visceral and muscular without becoming brutal. Vocals ( as well as guitar and laptop) by Tyondai Braxton ( son of Anthony Braxton) have made an enormous contribution. Though digitalised beyond recognisable lyrics, these sounds act as an additional instrument and push the band into innovative shapes and responses. While exHelmet drummer John Stanier lays down expansive rhythmic patterns, Ian Willams ( ex- Don Caballero) and Dave Konopka ( exLynx) weave guitar and keyboards in, out, up, down and all around. By forgoing obtuse time- signature changes in preference for addictive organic momentum, Battles remain tight as a fist. Their precise musicianship may lend an air of prog rock, but the groove achieved undermines any chance of chin stroking. As a truly modern band should, Battles include elements of jazz, rock and electronica but manage to sound like nothing that’s come before.