Rapper Doom performs late afternoon on July 18 at the Pitchfork Music Festival in Chicago's ...

A guitarist for the Canadian punk band F* Up surfs the crowd.

Pink Eyes, singer for Canadian band F* Up, engages the crowd during this year's Pitchfork ...

F* Up singer Pink Eyes wears a desecrated beach ball as a hat during the ...

Baltimore-based spazz-rockers Ponytail perform during this year's PItchfork Music Festival.

Chicago band Disappears plays an early set July 18 as part of this year's Pitchfork ...

A crowd control officer scans a moshing crowd during a raucous performance by rapper DOOM ...

Singer Matt Berninger of Brooklyn-based band The National sings during his band's performance July 18 ...

Brooklyn-based band The National closes out the July 18 lineup as part of the 2009 ...

Flaming Lips frontman, Wayne Coyne salutes the crowd during the closing performance of the 2009 ...

New York-based DJ and producer, DJ/rupture performs a set July 19 as part of the ...

New York-based DJ and producer, DJ/rupture performs a set July 19 as part of the ...

Members of New York-based band The Walkmen perform late afternoon July 19 as part of ...

Anthony Gonzalez of France-based band M83 sings during a late afternoon performance July 19 during ...

Hip hop artist Pharoahe Monch performs at the 2009 Pitchfork Music Festival July 19 in ...

A member of Pharoahe Monch's crew performs during the 2009 Pitchfork Music Festival.

The Flaming Lips close out the three-day 2009 Pitchfork Music Festival July 19 in Chicago's ...

The Flaming Lips close out the three-day 2009 Pitchfork Music Festival July 19 in Chicago's ...