Madonna made her festival debut last night (April 30) at the Coachella Valley Music & Arts Festival in Indio, Calif., performing six songs in front of one of the largest crowds ever to witness an

Madonna made her festival debut last night (April 30) at the Coachella Valley Music & Arts Festival in Indio, Calif., performing six songs in front of one of the largest crowds ever to witness an artist at the event. Day two of Coachella was also highlighted by performances from Massive Attack, Scissor Sisters, Yeah Yeah Yeahs, Tool and Gnarls Barkley.

Madonna was more than 20 minutes late starting, and her delayed set drew several rounds of booing from the sea of humanity packed into and around the Sahara Tent. But she oozed personality once taking the stage, at one point shouting at a fan who had thrown water onto the stage and then wiping it up herself, and later asking the audience, "Everybody, does my a** look okay?"

The set featured her latest hit single "Hung Up," "Get Together," "I Love New York," "Ray of Light," "Let It Will Be" and the vintage "Everybody." The show served as a warm-up for the May 21 kick-off of her Confessions tour in Los Angeles.

Playing their first U.S. show in eight years, Massive Attack did not disappoint with a powerful set led by material from its 1998 album, "Mezzanine." Cocteau Twins vocalist Liz Fraser made a rare appearance to sing such tracks as "Teardrop" and "Black Milk," while Horace Andy took the mic for "Man Next Door" and "Angel." The set also featured "Inertia Creeps," "Safe From Harm" and "Future Proof."

The Scissor Sisters kept the party going on the second outdoor stage with unabashed dance pop tunes like "Take Your Mama," "T*** on the Radio," "Laura," "Mary" and their hit cover of Pink Floyd's "Comfortably Numb." Vocalist Ana Matronic also led the crowd in a collecting howling at the moon early in the set.

Gnarls Barkley shared Scissor Sisters' flair for the dramatic, choosing to take the stage decked out as characters from "The Wizard of Oz." Vocalist Cee-Lo eventually stripped down to his undershirt to belt out "Transformer," "Smiley Face," "Necromancing" and "Crazy," which is now in its fourth week at No. 1 on the U.K. singles chart.

Not to be outdone, Yeah Yeah Yeahs frontman Karen O trotted out one of her trademark sparkling stage outfits for the band's early evening set on the main stage. The group opened with "Cheated Hearts" from its new album "Show Your Bones" and also played new single "Gold Lion," "Phenomena," "Art Star," "Turn Into" and its breakthrough hit, "Maps."