Ezra Koenig of Vampire Weekend performs onstage during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Claire Boucher and Alexis Krauss
Claire Boucher aka Grimes and Alexis Krauss of Sleigh Bells backstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Araabmuzik
Araabmuzik performs during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Japandroids
Brian King of Japandroids performs during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Liturgy
Tyler Dusenbury and Hunter Hunt Hendrix of Liturgy pose for a portrait backstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Purity Ring
Megan James of Purity Ring performs during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Barry Brecheisen/WireImage
Grimes
Claire Boucher aka Grimes performs during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Danny Brown
Danny Brown performs during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Sleigh Bells
Alexis Krauss of Sleigh Bells performs onstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Cults
Madeline Follin of Cults performs during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Barry Brecheisen/WireImage
Kendrick Lamar
Kendrick Lamar performs onstage during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Cloud Nothings
Dylan Baldi of Cloud Nothings poses for a portrait backstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Purity Ring
Corin Roddick of Purity Ring performs during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Barry Brecheisen/WireImage
Japandroids
Brian King and David Prowse of Japandroids perform during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Ty Segall
Ty Segall performs during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Cloud Nothings
Dylan Baldi of Cloud Nothings performs onstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Feist
Feist performs during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Barry Brecheisen/WireImage
Lady Gaga
Lady Gaga watches the performance of Kendrick Lamar during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Dirty Projectors
David Longstreth of Dirty Projectors performs during the 2012 Pitchfork Music Festival in Union Park on July 13, 2012 in Chicago, Illinois.
Barry Brecheisen/WireImage
Wild Flag
Carrie Brownstein of Wild Flag performs during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Grimes
Claire Boucher aka Grimes poses for a portrait backstage during the 2012 Pitchfork Music Festival in Union Park on July 14, 2012 in Chicago, Illinois.
Roger Kisby/Getty Images
Beach House
Alex Scally and Victoria Legrand of Beach House perform during the 2012 Pitchfork Music Festival in Union Park on July 15, 2012 in Chicago, Illinois.
