Unless the weathermen on the boob tube are lying through their bleached white teeth, Independence Day weekend is surely gonna be a scorcher. But though most the Valley will be sweating their collective asses outdoors watching fireworks and whatnot, Markus Schulz and his fans will be kicking it within the air-conditioned comfort of the Marquee Theatre, 730 North Mill Avenue in Tempe, on Saturday, July 3. The German-born trance turntablist (who worked the wheels of steel in Phoenix clubs for most of the '90s) is headlining the massive Indepen-dance event at the concert hall, which also offers supporting sessions from locals Turner & Heit, Sean Essex, DJ Lujan, and DJ Tonic. Doors open at 8 p.m. and admission is $21.25. Call 480-829-0707 or visit www.luckyman.com.