Lady Gaga, Green Day, a reunited Soundgarden, Arcade Fire, the Strokes and Phoenix will headline this year's Lollapalooza, festival organizers confirmed today (Apr. 6).

The National, Spoon, Devo, Cypress Hill, Cut Copy, the New Pornographers, Erykah Badu, Slightly Stoopid, Grizzly Bear, Gogol Bordello, Chromeo, Wolfmother, Yeasayer and X Japan are also among the more than 130 bands, musicians, and DJs set to perform at the weekend-long event, scheduled for Aug. 6-8 in Chicago's Grant Park.

Tickets for the three day festival are $215, inclusive of the service charge, and are on sale now. Additional information about tickets, travel packages and VIP options is available at lollapalooza.com.

Lady Gaga's appearance at Lollapalloza is part of her previously announced Monster's Ball tour, which stops at arenas across North America throughout the summer.

As previously reported, Soundgarden announced that it will reunite for concerts in 2010 via a New Year's Eve Twitter message from frontman Chris Cornell which directed fans to a new Web site, Soundgardenworld.com. Lollapalooza is the first confirmed appearance by the Seattle rock quartet -- Cornell, guitarist Kim Thayil, bassist Ben Shepherd and drummer Matt Cameron -- since splitting up in the spring of 1997.

Both Arcade Fire and The Strokes are due to release new albums this year, and Lollapalooza is the first confirmed North American shows in 2010 for both bands.

Expanding on 2009's club-styled "Perry's" stage, the 2010 DJ lineup includes 2ManyDJs, Digitalism, Lollapalooza founder Perry Farrell, Tiga and Felix da Housecat, among others.

Last year's Lollapalooza was the third highest grossing music festival of 2009, according to Billboard Boxscore. The festival grossed $14,082,461 and and was attended by 225,000 people over three sold-out days.

Here's the complete Lollapalooza 2010 lineup:

Soundgarden
Green Day
Lady Gaga
Arcade Fire
The Strokes
Phoenix
Social Distortion
MGMT
Jimmy Cliff
Hot Chip
The Black Keys
The National
Spoon
Devo
Cypress Hill
Cut Copy
The New Pornographers
Erykah Badu
Slightly Stoopid
Grizzly Bear
Gogol Bordello
Chromeo
Wolfmother
Yeasayer
X Japan
MUTEMATH
Metric
Dirty Projectors
AFI
Mavis Staples
Matt & Kim
The xx
Drive-By Truckers
Blues Traveler
Edward Sharpe & The Magnetic Zeros
The Temper Trap
Jamie Lidell
Frightened Rabbit
F**k Buttons
Deer Tick
Blitzen Trapper
Stars
Raphael Saadiq
The Cribs
Minus the Bear
Switchfoot
The Walkmen
Mumford & Sons
Wild Beasts
Rogue Wave
Los Amigos Invisibles
The Big Pink
The Dodos
Hockey
Cymbals Eat Guitars
B.o.B
Dawes
Warpaint
The Antlers
The Soft Pack
Rebelution
Balkan Beat Box
Wavves
American Bang
The Ike Reilly Assassination
Company of Thieves
Nneka
Harlem
The Constellations
Miniature Tigers
Mimicking Birds
The Kissaway Trail
HEALTH
Javelin
The Morning Benders
Foxy Shazam
Violent Soho
Royal Bangs
NEON TREES
Freelance Whales
Semi Precious Weapons
Dan Black
The Band of Heathens
Dragonette
My Dear Disco
Shawn Fisher
Neon Hitch
Skybox
The Ettes
Jukebox the Ghost
These United States
MyNameIsJohnMichael


Performing at PERRY'S:

2ManyDJs
Empire of the Sun
Digitalism
Perry Farrell
Tiga
Felix da Housecat
Rusko
Erol Alkan
Kaskade
Flosstradamus
Wolfgang Gartner
Joachim Garraud
Mexican Institute of Sound
Caspa
Peanut Butter Wolf
Dirty South
NERVO
Cut Copy (DJ Set)
Beats Antique
Steve Porter
Didi Gutman of Brazilian Girls
Ancient Astronauts
Ana Sia
Team Bayside High
Dani Deahl
FreeSol
DJ Mel
BBU
Vonnegutt
Only Children
Lance Herbstrong