Peter Cetera

Peter Paul Cetera Jr. is an American retired 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 albums with Chicago and eight solo studio albums. As a lead singer/vocal artist he has had four number one songs on the Billboard Hot 100, two during his tenure with Chicago and two during his solo career. Of those four songs he wrote or co-wrote three.

Biography summary from English Wikipedia, photograph via Wikimedia Commons.