Second AmsterJam Offers Mash-Ups, Arrests

As tipped here in July, the Killers will kick off a fall North American tour with an Oct. 6-7 stand in Los Angeles.

If the second annual AmsterJam festival failed to deliver on the first two of its three highly-touted onstage collaborations between unlikely stagefellows, the third so-called "mash up" proved the charm, as the union of Dave Grohl and Tom Petty wowed fans.

"Petty-Foo," as it was being dubbed by concertgoers at New York's Randall's Island on Saturday, brought Petty and the Heartbreakers' hits-packed set to a climactic finish, serving as the group's two-song encore.

While not exactly a perfect marriage of the two bands -- Grohl was the only Foo Fighter to join Petty and company -- ultimately it seemed to matter little, as both audience and entertainers beamed during Grohl's guest turn on "Runnin' Down a Dream" and "You Wreck Me."

On the former, Grohl contributed rhythm guitar and backing vocals, but during half of "You Wreck Me," he grabbed a shaker and turned over centerstage to Petty, before joining the singer and the band for a final bow.

Earlier in the day, popular Latin acts Yerba Buena and Tego Calderon split the daytime slots with hometown hip-hop stars Busta Rhymes and LL Cool J. Each were given full sets, before a one-song "mash up." And while all four delivered in their own time slots, Yerba Buena's return for Rhymes' finale was messy and unfocused, as was Calderon's appearance during LL's "Doin' It."

As previously reported, Rhymes wound up under arrest on an assault charge following his set. According to local media reports, police utilized the opportunity to grill him about the Feb. 5 murder of his bodyguard, Israel Ramirez, during a Brooklyn video shot. Rhymes has to this point refused to cooperate with investigators.

For the second year, AmsterJam concertgoers were required to hand over their drivers licenses at entrances, after which the barcodes on the IDs were scanned and wristbands were printed bearing both their name and whether or not they were of legal drinking age. Organizers used the technology to ensure that all concertgoers were legal at the over-21 event.

According to a press release, 1,000 would-be attendees were turned away at last year's event thanks to the AgeBand system, developed by the Precision Dynamics Corporation using information provided by the American Association of Motor Vehicle Administrators.