this "music festival" is happening in mid-may, actively soliciting donations.... and charging $35-$55 admission.
no lineup has been announced, though they are careful to clarify that there will be international acts.
from their site:
The Occupy Festival is endorsed by the Occupy Chicago organization. The festival is contributing to the Occupy movement by donating 50% of all profits to Occupy Chicago.
If you support the cause, help keep it alive: