Peter Paul Cetera ( ; 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.
Peter Paul Cetera will only ever be a singer and songwriter.
It is impossible to know whether he will have other careers in the future, especially based on this- things could go either way. It's neither correct nor incorrect.