Doris Day filmography with Warners after filming "Young at Heart" (1954) with Frank Sinatra. Day then campaigned for more dramatic parts. Her portrayal of singer Ruth Etting in "Love Me or Leave Me" (1955) with James Cagney, was well received by critics and was a box office hit. However, her follow-up films, Alfred Hitchcock's remake of "The Man Who Knew Too Much" (1956), Andrew L. Stone's "Julie" (1956), and George Abbott and Stanley Donen's film version of "The Pajama Game" (1957) were less successful among the critics and the public alike. Day's star attained greater heights with the success of "Pillow Talk" in
If You Leave Me Now hit, "If You Leave Me Now" with them on stage live at their concerts, with proceeds going to the American Cancer Society to fight breast cancer. The fund raising effort has continued in succeeding years. Peter Cetera originally wrote "If You Leave Me Now" at the same time as "Chicago VII"'s "Wishing You Were Here", and composed it on a guitar. According to information on the sheet music for the song at MusicNotes, "If You Leave Me Now" is written in the key of B major, and Cetera's vocal range varies between F sharp 4 (F♯) and D sharp 6