It's the Black & Blue Ball -- Bootie Mashup's annual Folsom Street Fair weekend party, with plenty of sexy mashups and fetish-tinged fun to go around. Dress up in your fetishwear finest or come as you are! At 11 PM on the Main Stage, live mashup rock band Smash-Up Derby throws down an extra sexy set, while resident DJs Mysterious D and Rawburt spin mashups that are sure to keep you sweating late into the night. Plus, aerialist Bramani Quinn works the silks high above your heads for the Midnight Mashup Show!

Upstairs in the Lounge, DJ Shyboy (Bootie LA) and DJ Freddy, King of Pants (Bootie Seattle) "make it rain on dem bros" with a Hip-Hop Pool Party -- and they'll both also be spinning mashup sets in the Main Room. In Above it's the delirious roof-raising dance sounds of Brass Tax, as DJs Marky Ray, Haute Mess, and more spin party music all night. And in the Dazzle Room, it's Electrosexual, with Adrian (of A Plus D) and Matt Hite spinning sexy electroclash from the early 2000's. All this, plus drag hosts WooWoo Monroe, Shelix, and Willard, as well as club photography by ShutterSlut, and free Bootie CDs to the first 100 people through the door!

Launched in 2003 by San Francisco DJ duo A Plus D, Bootie was the first club night dedicated solely to the then-burgeoning artform of the bootleg mashup -- and is now the biggest mashup event in the world, with regular parties in several cities. Winning various nightlife awards for the past 12 years, Bootie celebrates pop culture both past and present, keeping your brain guessing and body dancing with creative song combinations. Mixing and matching every musical genre, era, and style into one big dance party, it's a place where everyone is welcome. And with free mashup CDs given away like candy, Bootie provides the soundtrack for the A.D.D. generation.