GREAT NOTION—The Sometimes a Great Notion Festival hopes to surprise and confuse. And it is kind of confusing, like, who is Metal Postcard Records? And why are Peaking Lights sharing a stage with the Felice Brothers? But with a stellar lineup with local favorites like Onuinu, White Fang, and more it should be great! ZP
Disjecta, 8371 NE Interstate, Fri 6 pm-midnight, Sat noon-midnight, Sun noon-10 pm, $25-55, all ages

SNAPPY BIRTHDAY—For five years Snap! has been snapping your ass on the dance floor with bona fide ass-waggling hits from the '90s! Join 'em tonight at the Snap! '90s Dance Party: Fifth Year Anniversary, and wiggle on down with turntablists Dr. Adam, Colin Jones, and Spies Like Us—plus a '90s-style costume contest! WSH
Holocene, 1001 SE Morrison, 9 pm, $3-5