Peter Cetera is an American musician. He was a member of the American rock band Chicago, where he wrote and sang lead vocals on the hit If You Leave Me Now. He released the album Solitude / Solitaire, followed by Faithfully and World Falling Down. Some of his most popular songs include Glory of Love (Theme from The Karate Kid, Pt. II), After All (Love Theme from Chances Are) with Cher, and The Next Time I Fall with Amy Grant. He has appeared in the documentary Chicago: The Terry Kath Experience and the film Electra Glide in Blue.