RIOT FEST–the music festival which celebrates rock, indie, punk and underground artists from every era--has announced the line-ups and venues for the after-parties for the Chicago festival (see full line-ups below). The official on-sale begins today, August 21 with a limited number of single-day tickets available. All after-parties are open to 3-day pass holders (subject to capacity).

After a landmark year in 2011, the eighth annual RIOT FEST--the music festival which celebrates rock, indie, punk and underground artists from every era--is expanding for the first-time ever into an outdoor music event and carnival in 2012.