Peter Paul Cetera (/səˈtɛrə/ sə-TERR-ə; born September 13, 1944) is an American singer, songwriter, and bassist best known for being an original member of the rock band Chicago (1967–1985), before launching a successful solo career. His career as a recording artist encompasses seventeen albums with Chicago and eight solo albums.

With "If You Leave Me Now", a song written and sung by Cetera on the group's tenth album, Chicago garnered its first Grammy Award. It was also the group's first number one single