who sings if you leave me now you take away the biggest part of me
If You Leave Me Now "If You Leave Me Now" is the title of a popular hit ballad by the American rock group Chicago, from their album Chicago X. It was written and sung by bass guitar player Peter Cetera and released as a single on July 31, 1976. It is also the title of a Chicago compilation album released by Columbia Records (Columbia 38590) in 1983.