Chicago is a
rock band band that formed in
1967 in
Chicago, Illinois. Well known for being one of the first (and, indeed, one of the few) rock bands to make extensive use of horns and for producing a number of hit ballads, Chicago had a steady stream of hits throughout the
1970s and
1980s. During the
1990s, the band's popularity began to decline, but they continue to record and tour.