As befits a 21-year-old who can release a grime mixtape one day and write a piece for the London Philharmonic the next, the debut album by Mica Levi is a difficult creature to classify. At first listen, Jewellery sounds as if it's been thrown together in an afternoon spent in a junkyard. The clattering tracks are over before they start. Weird noises abound and the guitars are way out of tune. Then the whole thing begins to crystallise. Brilliant pop moments - "Golden Phone", "Calculator" - emerge, and you find yourself humming them long after the racket has ceased.