One of the biggest-selling bands in U.S. history, hailing from the Windy City (Chicago, Illinois). Formed in 1967 as "The Big Thing", they were one of the first groups to successfully fuse rock-and-roll with a horn section. This blend worked well for them into the late 1970s, until they started to shift towards a more adult-contemporary style. Also, bassist Peter Cetera was becoming the voice of the band at that time, compared to early days when vocal duties were shared and more attention was paid to the music and not the individual members.
They haven't put out much original material in recent years but tour to the masses every year since they started. In dance music circles, they're best known for their minor hit, "Streetplayer", which Kenny "Dope" Gonzalez sampled for his monster 1995 anthem, "The Bomb!" (released under the alias of Bucketheads, The).