Chicago is an American rock band formed in Chicago in 1967. The group began calling themselves the Chicago Transit Authority in 1968, then shortened the name in 1969. Self-described as a "rock and roll band with horns," their songs often also combine elements of classical music, jazz, R&B, and pop music.

Peter Paul Cetera is a retired American musician best known for being a frontman, vocalist, and bassist for the American rock band Chicago from 1967 until his departure in 1985. His career as a recording artist encompasses 17 studio albums with Chicago and eight solo studio albums.