You don’t need to nose around in the Fat Possum trough to find jumpy, fierce, dirty blues rock that sounds like somebody put too much turpentine in the barbecue sauce: two of Chicago’s most underrated party bands are combining forces for a 500-copy split 12-inch on Original Sound Recordings and a release party that ought to lift the roof off the joint (which at the Hideout admittedly doesn’t take much). VELCRO LEWIS & HIS 100 PROOF BAND have evolved over the years from a simple and solid PBR rock band into a rattling, trippy, fuzz-toned R & B six-piece where instruments get passed around like bottles. Meanwhile, John Forbes’s junkyard-dog combo TIJUANA HERCULES just keeps on getting better at what it’s always been good at, namely finding a skanky, swampy groove and beating it till it cries for its mama. It’s as mesmerizing as minimalism but a whole lot sweatier, and even the hallucinations thus induced have trouble competing with Forbes’s endless assortment of pimpwear. On the question of which front man acts more like a demon-possessed wino onstage, the jury’s been out for a long, long time. Lewis and co. headline, Tijuana Hercules plays second, Dark Fog opens, and Naomi Walker spins. a 10 PM, Hideout, 1354 W. Wabansia, 773-227-4433 or 866-468-3401, $7