One Hit Wonders

Peter Paul Cetera (born September 13, 1944 in Chicago, Illinois) is an American singer, songwriter, and bass guitar player best known for being a founding member of the rock band Chicago. The voice of major Chicago hits such as “25 or 6 to 4″, “If You Leave Me Now”, and “You’re The Inspiration”, Cetera went on to become an accomplished solo artist with such songs as his hit #1 single “Glory of Love”.
Although he is not entirely comfortable with talking about his years with Chicago, Cetera continues to incorporate some of the group’s songs (including those he composed) into his live repertoire (like “25 or 6 to 4″, “If You Leave Me Now”, and “You’re The Inspiration”).

Source: Wikipedia