Pitchfork has announced the initial line up for the 2010 Pitchfork Music Festival, and it includes Modest Mouse, Pavement, LCD Soundsystem, St. Vincent, Lightning Bolt, Cass McCombs, Sleigh Bells, Here We Go Magic and Raekwon.

The show will happen from July 16th - 18th in Union Park in Chicago. Tickets are on sale now.

Check out the Spacelab Festival Guide for more information on Pitchfork Music Festival.