Unsane + Keelhaul + Pigs + Disappearer

The Cleveland math-metal quartet Keelhaul makes a habit of flouting convention. Some of its pieces last under a minute, others nearly nine; vocals may enter three fourths of the way through a song, or not at all. The common denominator is an ultradisciplined brand of riff worship: The quartet builds diabolical obstacle courses out of asymmetrical phrases, then proceeds to run them with visceral gusto. Headliner Unsane favors a much more straightforward bludgeon—anguished noise-blues that still sounds as obstinately primitive as when the local outfit formed two decades ago.