Because Peter Brotzmann has a (well-deserved) reputation as one of the most ferocious free-jazz saxophonists ever to blow a note, when I write about him I tend to emphasize his overlooked skill and sensitivity on more restrained material. The fact is, he’s constantly running the gamut, from guttural and hair-raising to pensive and pointillist and back again. A record like last year’s Full Blast (Jazzwerkstatt), where he’s as relentless as a wrecking ball, is quite unusual for him. Electric bassist Marino Pliakas (of Steamboat Switzerland) and drummer Michael Wertmuller (founder of Alboth!) keep up a fearsome all-out attack that recalls the Japanese bass-drums duo Ruins–there are an overwhelming number of notes, all coming at you very hard–but instead of that outfit’s proggy precision they opt for an instinctual improvised approach where the principal modes seem to be “surge” and “surge harder.” Even so–and this says all you need to know about the power of Brotzmann’s playing–they have to struggle to keep from getting drowned out. Notwithstanding the absence of an electric guitar, they make me think of Brotzmann’s old band Last Exit–or rather what Last Exit should’ve sounded like. Cellist Fred Lonberg-Holm opens the show with his Valentine Trio, which now includes bassist Jason Roebke and drummer Frank Rosaly. a 9:30 PM, Empty Bottle, 1035 N. Western, 773-276-3600 or 866-468-3401, $12, $10 in advance.