Cost: $35 for single-day tickets, $60 for a Saturday/Sunday 2-day pass, $75 for a three-day pass

Organizer: Pitchfork

Cost:$35 per day

What to expect: Two stages of top-notch independent music, plus the usual festival fare of beers and greasy food, in Chicago's lovely Union Park (check out nearby restaurants and bars).

Why to go: The Flaming Lips are perhaps the biggest peformer yet; they put on a heck of a live show. See all our Pitchfork picks.

The lineup, as announced thus far:

Friday - "Write the Night: Set Lists by Request" (online requests can be made once you buy tickets).
5 p.m.: Tortoise (C)
6:10 p.m.: Yo La Tengo (A)
7:20 p.m.: The Jesus Lizard (C)
8:40 p.m.: Built to Spill (A)

Saturday
1 p.m.: Disappears (B)
1 p.m.: Cymbals Eat Guitars (A)
1:45 p.m.: The Dutchess & The Duke (B)
1:45 p.m.: Plants and Animals (C)
2:30 p.m.: Fucked Up (A)
2:40 p.m.: Antlers (B)
3:20 p.m.: The Pains of Being Pure at Heart (C)
3:35 p.m.: Bowerbirds (B)
4:15 p.m.: Final Fantasy (A)
4:30 p.m.: Ponytail (B)
5:15 p.m.: Yeasayer (C)
5:30 p.m.: Wavves (B)
6:15 p.m.: Doom (A)
6:30 p.m.: Lindstrom (B)
7:25 p.m.: Beirut (C)
7:30 p.m.: Matt and Kim (B)
8:30 p.m.: The Black Lips (B)
8:40 p.m.: The National (A)

Sunday
1 p.m.: Michael Columbia (B)
1 p.m.: The Mae Shi (A)
1:45 p.m.: Dianogah (B)
1:45 p.m.: Frightened Rabbit (C)
2:30 p.m.: Blitzen Trapper (A)
2:40 p.m.: The Killer Whales (B)
3:20 p.m.: Pharoahe Monch (C)
3:35 p.m.: Women (B)
4:15 p.m.: The Thermals (A)
4:30 p.m.: DJ/Rupture (B)
5:15 p.m.: The Walkmen (C)
5:30 p.m.: Japandroids (B)
6:15 p.m.: M83 (A)
6:30 p.m.: Vivian Girls (B)
7:25 p.m.: Grizzly Bear (C)
7:30 p.m.: Mew (B)
8:30 p.m.: The Very Best (B)
8:40 p.m.: The Flaming Lips (A)

Centerstage Reviewer: Ben Rubenstein