"Onstage we are going to give you more than anybody else, and we are going to kick your ass harder than anybody else.

"Oooh, Oh, Chrome-ee-oh, Oooh, Oh, Chrome-ee-oh," a sold-out room of fans at Washington D.C.'s 9:30 Club chant-sang Monday night as a bank of lights to put Justice to shame came to life and the space-disco intro music to 2007’s Fancy Footwork came through the P.A.

Friday night in Oakland, Aerosmith played their first U.S. show since singer Steven Tyler fell from the stage in South Dakota on August 5, 2009, and broke his shoulder. The past year has been one of the most dramatic in the band's four-decade career. Since tumbling off stage, Tyler did a stint in rehab for addiction to pain killers and at one point became so estranged from his

All that was missing from Robyn's set Friday at the opening night of the "All Hearts" tour at Los Angeles' Music Box theater was a giant disco ball.

About halfway through Rage Against the Machine's sold-out benefit show to support organizations fighting to overturn Arizona's controversial SB-1070 immigration law, singer Zack De La Rocha's lyrics took on new meaning. "What better time than here," he purred as the band ripped through "Guerilla Radio," one of their best-known songs, "What better time than now."

During the second song of Paramore's summer tour kick-off show in Raleigh, NC, Friday night, feisty frontwoman Hayley Williams leapt up on a monitor, red hair flying, and sang, "Tell me, tell me, do you feel the pressure?"

In unison, the sold-out, 5,000-plus Raleigh Amphitheater crowd answered the lyric as if locked on repeat: "We were born for this!"

Following British pop-rock sensation Keane's concert at Oakland's Fox Theater Tuesday night, a crowd of fans (mostly girls) waited behind the venue, hoping for a glimpse of a departing band member and the opportunity to scream at the top of their lungs, or if things really went right, get an autograph (for which pens were already in hand).

Tuesday night Kid Cudi, Best Coast's Bethany Cosentino, and Vampire Weekend's Rostam Batmanglij performed together at the Music Hall of Williamsburg in Brooklyn, and the Cleveland rapper proved he was the loudest, proudest, and by far the most entertaining.

BEST EPIC DANCE PARTY: MATT AND KIM