Still haven’t fully decided how to spent your Halloween weekend? There’s a very special show going on tomorrow (that’s Saturday, October 29) night at Seattle’s most happening basement–Decades Cover Night will feature 20 local bands, each performing their own versions of their favorite songs from an assigned decade. The 50-year time warp will go something like this:Stephanie, King Dude, Spurm, and Pleasure Beauties will plays songs from the 60s.Pony Time, Footwork, Neighbors, and Virgin Blood will play songs from the 70s.Punishment, The Balloons, and Dude York will play songs from the 80s.Stickers, Hot Freaks, Orcateers, and Twomp will play songs from the 90s.Naomi Punk, Haunted Horses featuring USF, and Special Explosion will play songs from the ’00s.Curious about who’s playing what? Reverb’s got a bit of a preview for you, after the jump.King Dude will be playing the Kinks’ “Harry Rag” and Nico’s “I’m Not Sayin’.”Virgin Blood will be playing Wreckless Eric’s “Whole Wide World” and Elvis Costello’s “No Action.”Footwork will be playing The Slits’ “Love Und Romance.”Hot Freaks is a Guided By Voices-only cover band.Orcateers will be playing the Murder City Devil’s “Press Gang” and TLC’s “Waterfalls” as one single song.Special Explosion will be playing Deerhoof covers.USF collaborating with Haunted Horses will be playing Radiohead’s “Idioteque.”You’ll have to find out the rest for yourself–the show starts at 7:30 p.m. sharp. Two quick other things to know about this show–there will also be a costume contest, so dress decade-appropriately, and the cover cost is a donation, the proceeds of which will go to HTFC. Be there or be square.Follow us on Facebook and Twitter.