Already legends in their hometown of Austin, the duo of Aaron Behrens and Thomas Ross Turner melds guitars, sequencers and programmed beats into a white-hot mix of punk rock, digitized funk and techno. Taking cues from disparate influences ranging from Daft Punk to Jerry Lee Lewis to Queen, Ghostland Observatory delivers with sweat and screams. Studio albums include 2005’s delete.delete.i.eat.meat, 2006’s Paparazzi Lightning and last year’s Robotique Majestique, but Ghostland’s calling card remains its high-energy live shows — a cathartic experience for the duo and their devotional crowds alike. And don’t be fooled by the act’s reputation for incorporating over-the-top light shows into their festival showcases; far from being a smoke and mirrors distraction, all those lasers are merely techno-gravy ladled onto the duo’s already explosive dynamic. Singer/guitarist Behrens may well be one of the most electrifying frontmen in rock working today, and the deceptively reserved-looking Turner is a veritable mad scientist behind his bank of keyboards, cooking up one sky-rattling jam after another.