Chicago is an American rock band formed in 1967 in Chicago, Illinois. The self-described "rock and roll band with horns" began as a politically charged, sometimes experimental rock band and later moved to a predominantly softer sound, generating several hit ballads. They had a steady stream of hits throughout the 1970s and 1980s. Singer Peter Cetera left the band in 1985 and started a successful solo career. In 1969 CTA performed "I'm a Man" live at the Beat Club in Bremen Germany! In 2012 they returned for a live tour.