Deluxe two CD + Blu-ray edition. Chicago, the legendary Rock & Roll Hall of Fame band with more than 100 million albums sold worldwide, bring their iconic sound to Ovation Hall at the Ocean Casino Resort in Atlantic City, NJ for a unique event which finds them joined by special guests Robin Thicke, Chris Daughtry, Steve Vai, VoicePlay, Judith Hill, Robert Randolph and Christone "Kingfish" Ingram. This once-in-a-lifetime event showcases Chicago's greatest hits and celebrates the 55th anniversary of their groundbreaking double-platinum debut album, THE CHICAGO TRANSIT AUTHORITY. The recording also captures "unplugged" a cappella arrangements and reimagined Chicago hits in an emotionally moving centerpiece.