Vampire Weekend performs at the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Vampire Weekend performs at the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Vampire Weekend performs at the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Vampire Weekend performs at the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Victoria Legrand of Beach House during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Victoria Legrand of Beach House during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Victoria Legrand of Beach House during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Victoria Legrand of Beach House during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Chief Keef performs during the AraabMuzik set during the Pitchfork Music Festival in Union Park on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Chief Keef performs during the AraabMuzik set during the Pitchfork Music Festival in Union Park on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Chief Keef performs during the AraabMuzik set during the Pitchfork Music Festival in Union Park on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Chief Keef performs during the AraabMuzik set during the Pitchfork Music Festival in Union Park on Sunday, July 15, 2012. — Lenny Gilmore/RedEye, July 15, 2012
Chief Keef joins AraabMuzik on stage during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
AraabMuzik performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Brock Brake/RedEye, July 15, 2012
King Krule aka Archy Marshall performs during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
King Krule aka Archy Marshall performs during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Four people watch Beach House on a video screen during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
A crowd surfer is pulled from the audience during AraabMuzik show during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
A girl crowd surfs during AraabMuzik show during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Lady Gaga attends Kendrick Lamar's set during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Lady Gaga attends Kendrick Lamar's set during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Three young men try to catch a glimpse of Pitchfork Music Festival through a fence on Ashland Avenue at Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Kendrick Lamar during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Kendrick Lamar during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Kendrick Lamar during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
The crowd cheers as Kendrick Lamar performs at the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Kendrick Lamar during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Kendrick Lamar during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Matt Sweeney fronts Chavez during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Maximillian Ortega relaxes in a hammock during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Iceage performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Brock Brake/RedEye, July 15, 2012
Ronke Soyode of Chicago spins a hula hoop during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Ty Segall performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — July 15, 2012
Ty Segall performs during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Fans scream as Ty Segall Band plays during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Fans cheer Ty Segall Band during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Ty Segall Band's drummer Emily Rose Epstein during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Ty Segall band's Mikal Cronin during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
A Pitchfork Music Festival volunteer sprays water on the crowd before Ty Segall plays the red stage in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Jay Freeland and Amanda Clark of Muscotine, Iowa try to stay cool under an umbrella during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Thee Oh Sees perform at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Brock Brake/RedEye, July 15, 2012
Thee Oh Sees perform at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Brock Brake/RedEye, July 15, 2012
John Dwyer fronts the San Francisco band Thee Oh Sees during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Fans enjoy Thee Oh Sees during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Thee Oh Sees' John Dwyer during Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
A man standing on Warren Boulevard peeks into the Pitchfork Music Festival in Union Park in Chicago on Sunday, July 15, 2012. — Scott Strazzante/Chicago Tribune, July 15, 2012
Milk Music performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Mike Rich/RedEye, July 15, 2012
Milk Music performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Mike Rich/RedEye, July 15, 2012
Milk Music performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Mike Rich/RedEye, July 15, 2012
Unknown Mortal Orchestra performs at the 2012 Pitchfork Music Festival in Union Park on July 15, 2012. — Mike Rich/RedEye, July 15, 2012
