Peter Paul Cetera Jr. (/səˈtɛrə/ sə-TERR-ə; born September 13, 1944) 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. With the song "If You Leave Me Now", written and sung by Cetera on the group's... see more