It’s been about six months since the region saw hide or hair of Severe Severe. They’ll share what they’ve been plotting tonight (Thursday) at 51 3rd Street with Girls of Porn and Film Strip (8 PM). . . . To celebrate the life and music of Levon Helm, the Felice Brothers, Elvis Perkins in Dearland, Ambrosia Parsley and the Elegant Too, AC Newman of the New Pornographers, Diamond Doves and more will pack into Club Helsinki for a special tribute show tonight (8 PM, $15, 828-4800). . . . Matthew Carefully unveils yet another new project, the Connect Fours, tonight at Putnam Den (9 PM, free, 584-8066). . . . Hey, it’s Sooze’s (Stephen Stanley) Birfday tomorrow (Friday). To celebrate, Barons in the Attic, Goldtooth and Sooze’s own Careers will perform downstairs at Valentine’s (8 PM, 432-6572). . . . Skidmore’s Tang Teaching Museum starts its summer UpBeat on the Roof series Friday night with Railbird (7 PM, tang.skidmore.edu). . . . The Wiyos are back at Club Helsinki Friday night (9 PM, $15, 828-4800). . . . Former Throwing Muses singer Kristin Hersh will perform her music/spoken-word piece “Paradoxical Undressing” at the Saratoga Arts Center on Saturday (7:30 PM, $10-$15, 580-8010).