Lollapolloza directed fans to an image via its Twitter and Facebook pages today to a roster with only the “O”s in place. Looking at the image seems to confirm what headliners will be performing at this summer’s 2010 festival. Bands such as Soundgarden, Green Day, Lady Gaga, Phoenix, The Strokes and Arcade Fire are among some that can be designated.

Devo, Hot Chip and Spoon are also likely to be performing at the three-day music fest this summer in Chicago.

Can I get another vowel? Which others can you decipher?