FESTIVALSA change in venue for Heliotrope 8 doesn't mean a change in the altered-state mania. The annual three-day marathon, which started Thursday, demonstrates the madcap wizardry as well as the rich musicality in the Twin Cities' rich psychedelic/experimental/free-form scene. Friday's lineup includes violin-laced rockers Mother of Fire, haze meisters Daughters of the Sun, Tender Meat, a Metzger/Linz/Bates mash-up, Milo Fine and visiting guests Joe McPhee and Chris Corsano, who have a new sax/drums collaboration on Roaratorio. Saturday includes Heliotrope vets Skoal Kodiak, Votel (ex-H.U.N.X.), Thunderbolt Pagoda and more freaky stuff. A free compilation CD comes with admission. (6 p.m. Thu.-Sat., Loring Theater. All ages. $12 daily, $24 three-day pass.) Chris Riemenschneider
POP/ROCK Can emo age gracefully? Arizona's Jimmy Eat World, emo mainstays since the 1990s, is trying to mature on 2010's "Invented," but it sounds like they've outgrown the genre they helped pioneer. Let's hope they look back to 2001's "Bleed American." Civil Twilight opens. (7 p.m. Fri., First Avenue, $25.) Jon Bream
The Twin Cities' favorite stoner-rock throwback act, Little Man turns up the fuzz, haze and sheer electricity on its new EP, "Orbital Amusement." Frontman/namesake Chris Perricelli channels everyone from Foghat and Big Star to Smashing Pumpkins and Queens of the Stone Age on the five-song collection, recorded in Libertyville, Ill., with Ed Tinley of the Ike Reilly Assassination. Release-party festivities will include special "Cosmonettes" dancers and opening sets by two other mighty local favorites, Red Pens and the Rockford Mules. (9 p.m. Fri., Turf Club. $8.) Riemenschneider
Yet another Canadian band that never lived up to its hype stateside, Halifax power-popsters Sloan were signed to Geffen Records in the early '90s and compared to the likes of Blur and Teenage Fanclub. They've maintained a cult following and an infectious sound for the new Yep Roc release, "The Double Cross." (9 p.m. Fri., 400 Bar. 18 & older.) Riemenschneider
Jason Isbell has been steadily trucking since leaving the Drive-By Truckers, assembling his own soulful twang-rock band (the 400 Unit) and now finally issuing another record as stellar as his 2008 solo debut. Titled "Here We Rest," the new disc offers more heartening portraits of a Southern culture on the skids and some mighty potent guitar work. It's gotten to where Isbell can play fewer DBT tunes if he wants, we won't mind. Maria Taylor opens. (9 p.m. Sat., Turf Club. $14.) Riemenschneider
Back from a long hiatus and relocated for convenience, 93X Fest was a staple of Memorial Day weekend in the early '00s. Instead of campsites and mud in Somerset, Wis., you get the bleachers and green grass of the Saints' ballpark in this welcome reincarnation, plus a grand-slamming lineup of some of the station's favorite headbangers. "Awake" hitmakers Godsmack are back from their own late-'00s hiatus to headline. Also performing are Hollywood Undead, Zakk Wylde's Black Label Society, Puddle of Mudd, Queensrÿche, All That Remains, Escape the Fate and New Medicine. (1 p.m. Sat., Midway Stadium, St. Paul. $40.) Riemenschneider
The Doobie Brothers merged rock, pop, boogie and folk into classic 1970s good-time music. When Michael McDonald signed on, the band added the slick jazzy soulfulness of "What a Fool Believes." He's no longer on board but longtimers Michael Hossack, Tom Johnston, Patrick Simmons and John McFee are still around to deliver "Listen to the Music," "China Grove" and "Long Train Runnin'." (8 p.m. Sat., Treasure Island Casino, $38-$48.) Bream
After solidly living up to British press hype for their 2006 debut, Sheffield's scrappy mod rockers the Arctic Monkeys have been on a steady tear, especially as a rowdy, all-go live act. Their sweetly named fourth album, "Suck It and See," lands Tuesday with yet more buzz behind it. Openers the Vaccines are where the Monkeys were in '06, buoyed by the smirkingly catchy single "Post Break-Up Sex." Shoegazer-ish à la Jesus & Mary Chain and anthemic like U2 (for whom they open next month), they proved their charm at South by Southwest but might have to liven things up in this opening slot. (7 p.m. Sat., First Avenue. Sold out.) Riemenschneider