Barcelona's Sonar Festival has laid plans for a Chicago event on September 9th - 11th, with the intention to make it an annual festival. Sonar has done festivals in Sau Paulo, London and Tokyo (among others), and this will follow the first U.S.-based Sonar evens in New York and Washington last year.
They'll join up with AC Entertainment to put on the show, and will handle the Sonar by Day events at the Chicago Department of Cultural Affairs and the Chicago Cultural Center. They'll announce Sonar by Night details in July with lineup and locations.
Sonar organizers are calling the Chicago happening a "multidisciplinary line-up with an experimental slant," so it seems like it will live up to its established street cred.
The Sonar Festival has been known as Spain's mashup of music and film and video, all rolled into one big multimedia festival. The 2010 Sonar Festival is happening now (June 17th - 19th) in Barcelona, Spain. 2010 also marks the first incarnation of a Sonar event in A Coruña, titled Sónar Galacia, on the same days.
Check out the Spacelab Festival Guide for more information on Sonar Chicago.