Yoko Ono will headline the second day of the Pitchfork Festival this July.More additions to the festival's lineup include Califone, The Sea & Cake, The Twilight Sad, Nomo, The William Parker Quartet and Fred Lonberg-Holm's Lightbox Orchestra.That makes the weekend look like this :Friday, July 13:Sonic Youth perform Daydream NationGZA/Genius performs Liquid SwordsSlint perform SpiderlandSaturday, July 14:Yoko OnoCat Power and Dirty Delta Blues (w/ members of Dirty Three, the Delta 72 & JSBX)ClipseIron and WineGirl TalkGrizzly BearBattlesCalifoneThe Twilight SadFujiya & MiyagiOxford CollapseDan DeaconBeach HouseProfessor MurderKen Vandermark's Powerhouse SoundSunday, July 15:The New PornographersDe La SoulStephen MalkmusOf MontrealJamie LidellThe Sea and CakeMenomenaKlaxonsThe PonysDeerhunterNomoCraig Taborn's Junk MagicFred Lonberg-Holm's Lightbox OrchestraMore info on Pitchf*#k.