Friday, July 18:
Pitchfork Music Festival and All Tomorrow's Parties present "Don't Look Back"

Public Enemy performing It Takes a Nation of Millions to Hold Us Back
* Sebadoh performing Bubble and Scrape *
Mission of Burma performing Vs.

Saturday, July 19:

Animal Collective
Jarvis Cocker
* The Hold Steady *
!!!
Vampire Weekend
Dizzee Rascal
Fleet Foxes
* Caribou *
Jay Reatard
* Titus Andronicus *
No Age
Atlas Sound
Extra Golden
* Elf Power *
The Ruby Suns
* Icy Demons *
A Hawk and a Hacksaw
Occidental Brothers Dance Band International
* Boban i Marko Markovic Orkestar *

Sunday, July 20:

Spoon
Dinosaur Jr.
Spiritualized
M. Ward
Ghostface and Raekwon
Les Savy Fav
The Apples in Stereo
Boris
Dirty Projectors
* Times New Viking *
Cut Copy
* Bon Iver *
The Dodos
King Khan & His Shrines
El Guincho
Fuck Buttons
* HEALTH *
* High Places *
* Mahjongg *

+ more info here