Tech fiends and music nerds unite, as the U.K.-based Download 2008 event arrives stateside for the fourth year in a row, boasting the best of the old and new, led by performances from reunited legends like shoegaze trailblazers the Jesus and Mary Chain and dance-punk godfathers Gang of Four. Also along for the ride are inventive newcomers like Cut Copy and the Whigs -- not to mention a gearhead's heaven of gadgets galore. Pairing technological ingenuity with musical innovation (plus $20 tickets!), the concert series launches at San Francisco's Shoreline Amphitheatre Saturday, July 19 with a performance to come the following day in Los Angeles' Gibson Amphitheatre. For the East Coast-inclined, an Aug. 2 stop in Philadelphia brings a revamped lineup featuring the Killers, Iggy Pop and the Stooges, Ghostland Observatory and many other acts not to be missed, scattered across multiple stages. Check back to SPIN.com for live reviews and video interviews from all the Download 2008 installations.