Roger Waters, surrounded

The new speaker towers that line the perimeter of the main stage were added specifically for the Roger Waters set that's sending waves of thunder and shimmer across the Empire Polo Field right now.

Production-wise, the set by the Floyd auteur is the most expensive in festival history. Major pyro, smoke, lasers and huge screens showing slick montages of images from the Floyd dreamscapes. Oh, and backstage there's an inflated pig the size of a school bus, and a floating astronaut.

Coachella founder Paul Tollett predicted this would jump to the top of his personal "best Coachella set ever" list, joining Rage Against the Machine's reunion last year and Saturday night's purple party with Prince. Classic rock at Coachella? When pigs fly.

-- Geoff Boucher