To celebrate the 55th anniversary of their groundbreaking double-Platinum debut album, Chicago Transit Authority, the band plays songs from the album, including some never-before-performed tracks. In addition to their biggest hits, the set also includes “unplugged” versions of some of Chicago’s classic tunes.

With more than 100 million albums sold worldwide and members of the Rock and Roll Hall of Fame, the multi-Grammy Award winning band Chicago has been hailed by Rolling Stone as one of the “most important bands in music since the dawn of the rock and roll era.” The legendary rock and roll band with horns came in as the highest charting American band in Billboard's Top 125 Artists of All Time. Chicago recently received The Recording Academy’s Lifetime Achievement Award from the Grammys and was previously inducted into the Grammy Hall of Fame in 2014. Band members Robert Lamm and James Pankow were inducted into the Songwriters Hall of Fame in 2017. Chicago has 21 Top 10 singles, five consecutive Number One albums, 11 #1 singles and five Gold singles, with a total of 48 Gold and Platinum awards. The original three band members are Robert Lamm on keyboards and vocals, Lee Loughnane on trumpet and vocals and James Pankow on trombone. The band line-up also includes Ray Herrmann on sax and flute, Wally Reyes Jr. on drums, Neil Donell on vocals, Ramon "Ray" Yslas on percussion, Tony Obrohta on guitar, Loren Gold on keyboards and vocals, and Eric Baines on bass and vocals.