On September 21, AAHH! Fest will take place at Union Park in Chicago (the same site that hosts Pitchfork Music Festival each year). The event was put together by Common and will be hosted by Dave Chappelle. Thanks to reader Brian Kedzorski for the tip.
The lineup includes Common, De La Soul, Jay Electronica, Lupe Fiasco, MC Lyte, Lil Herb, and “a special surprise guest”. There will also be a community showcase curated by Rhymefest, which will feature Diggy Simmons and young talent from Chicago.
Source: http://pitchfork.com/