"If You Leave Me Now '' Single by Chicago from the album Chicago X B - side "Together Again '' Released July 31, 1976 (1976 - 07 - 31) Format 7 '' Recorded March -- April 1976 Genre Soft rock Length 3: 55 Label Columbia Songwriter (s) Peter Cetera Producer (s) James William Guercio Chicago singles chronology "Another Rainy Day in New York City '' (1976) "If You Leave Me Now '' (1976) "You Are On My Mind '' (1977) "Another Rainy Day in New York City '' (1976) "If You Leave Me Now '' (1976) "You Are On My Mind '' (1977)
who sings the song if you leave me now
Chicago Chicago Chicago