This is a special extended gallery as REO Speedwagon joined Chicago on stage for the finale. The second half of the picture set covers that incredible experience.
As one of the longest-running and most successful rock groups in history, Chicago has sold over 38 million albums in the United States alone with 22 gold, 18 platinum, and 8 multi-platinum. On top of that, five have been number-one albums and they’ve had 21 top-ten singles from them.
