Hate to break it to you, club kiddies, but Skrillex didn't invent dubstep. While the cutesy-pie electronica producer helped light the match that caused the bass-heavy genre to explode in popularity in the past couple of years, dubstep's been around for more than a decade now. Just ask the cats behind long-running club night UK Thursdays, who were blasting bass long before Skrillex launched into the limelight. Since its debut in 2009, the weekly dance party has showcased a wide variety of dubstep artists from throughout the Valley and around the globe, each of whom offers a different take on the diverse British-born genre. In addition to the sort of brutal grinds and killer drops typified by the "brostep" generated by Skrillex and his ilk, the event has featured the more ambient flavors of dubstep, as well as such closely related variants as drum 'n' bass and UK garage. Locals like Sluggo, J. Paul, and ill-legal have been featured, as have such influential heavy hitters as 12th Planet, Rusko, 16-Bit, and BBC One's Mary Anne Hobbs. Pounding the walls of School of Rock with sub-harmonic thrum every Thursday, the night has helped give new meaning to the term "Thump Day."