Cerebral Ballzy’s debut album is over in a good deal less than half an hour. Would that American R&B and hip-hop bands took a cue here rather than filling their CDs with 80 minutes of skits and filler, as if that offered more value for money. Not that Cerebral Ballzy are an American R&B or hip-hop outfit. They are, instead, a New York hardcore punk quintet whose name is designed to make anyone who hears it ask, “Who on earth is this?”