Last spring's Great White tragedy might have put the kibosh on industrial grinders and all the pretty sparks that they can make indoors, but Denver's Log has plenty of other makeshift instruments to enhance its stage show -- including megaphones and an amplified two-by-four. Otherwise, two full drum kits (manned by Dr. Bugg and Lenny the Uni-Dread) plus an industrial percussionist (Jimmy the Grinder) anchor the tight, furiously rhythmic quintet that's rounded out by vocalist/bassist Harry Lug Nutz and guitarist Sigmund Dermatitus. A proficiently funky, oddball collective, Log is equally at ease incorporating chains, downspouts, sheet metal, kazoos and exotic animals into the mix. Scorching sci-fi guitars and improvisational flights of fancy lend surprising accessibility to songs about the nutritional value of "Spam Pops" ("The world stops/And pants drop/For the candy treat/Filled with meat"). Log borrows rhythms and riffs from world music, reggae, surf, prog-rock, punk, stadium anthems and even Melissa Etheridge (especially during its Lilith-approved version of "Babies Are Born Without Kneecaps"). Surrealism holds court for an evening when the Loggers open for Seattle's eclectic Black Frames (featuring sax phenom Skerik, bassist Brad Houser and percussionist Mike Dillon from Critters Buggin'), Thursday, July 31, at Cervantes' Masterpiece Ballroom. Hello, Dali.