Topping the list of performers are Modest Mouse [ tickets ], Iggy and the Stooges, My Morning Jacket [ tickets ], Interpol, Daft Punk, Ben Harper, Muse, and Lolla founder Perry Farrell's new band, Satellite Party. Pearl Jam's festival-closing set is expected to be that band's only US show this year. The initial lineup is listed below.

Lollapalooza, formerly a traveling festival, successfully reinvented itself in 2005 as a multi-day event anchored in the Windy City. Event organizers have since made a deal to remain at Grant Park through 2011.

In addition to music on nine stages, the event will offer Kidzapalooza for the next generation of Lolla fans, with family-oriented musicians, a hip-hop workshop, "a rock and roll petting zoo," hair and makeup styling, and a dance floor, among other things, according to organizers.

Lollapalooza will also bring back Mindfield, a multimedia, interactive attraction, and introduce a new "Green Street" exhibit to promote ecological sustainability, according to the Chicago Tribune.

The regular price for a three-day pass has increased to $195, but service charges have been eliminated.

Last year, Lollapalooza expanded from two to three days and reportedly drew 166,000 fans.

Lollapalooza lineup:
Pearl Jam
Daft Punk
Ben Harper & the Innocent Criminals
Muse
Iggy and the Stooges
Modest Mouse
Interpol
My Morning Jacket
Satellite Party
Yeah Yeah Yeahs
Snow Patrol
The Roots
Patti Smith
Kings of Leon
The Black Keys
Regina Spektor
Spoon
Lupe Fiasco
TV on the Radio
Pete Yorn
G. Love & Special Sauce
Paulo Nutini
Amy Winehouse
LCD Soundsystem
Clap Your Hands Say Yeah
Silverchair
Femi Kuti & the Positive Force
Yo La Tengo
Slightly Stoopid
The Hold Steady
Jack's Mannequin
Stephen Marley
STS9 (Sound Tribe Sector 9)
M.I.A.
Blonde Redhead
Sparklehorse
Sean Lennon
!!!
Blue October
Son Volt
Motion City Soundtrack
The Polyphonic Spree
Ted Leo and the Pharmacists
Peter Bjorn and John
Silversun Pickups
CSS
The Rapture
The Wailers
Roky Erickson & the Explosives
Tapes 'n Tapes
Heartless Bastards
The View
The Cribs
The Fratellis
Ghostland Observatory
Tokyo Police Club
Rhymefest
Soulive
Cold War Kids
Annuals
Fields
Electric Six
Elvis Perkins in Dearland
Sam Roberts Band
The Black Angels
Charlie Musselwhite
Aqueduct
Juliette & the Licks
Dios
Viva Voce
David Vandervelde
Los Campesinos!
Chin Up Chin Up
Ryan Shaw
Colour Revolt
The Satin Peaches
Illinois
Arckid
Mikey Avalon
The 1900s
The Postmarks
Bang Bang Bang
Bound Stems
High Class Elite
Carey Ott
Matt Roan