Chicago's first hit, I'm a Man (1970) was a cover of a Spencer Davis Group song, written by Stev(i)e Winwood. Their second, 25 or 6 to 4 (also 1970), was written by Robert Lamm, and their third and biggest hit (If You Leave Me Now, 1976) by Peter Cetera. On Chicago's version of I'm a Man, Cetera, Lamm and Kath took turns to sing the verses; on the second and third hits, lead vocals were by Cetera.
© Haydn Thompson 2023