"If Ever I See You Again" is the theme song from the title 1978 film starring Shelley Hack

Shelley Hack

Shelley Marie Hack is an American supermodel, actress, producer, and political & media advisor. Hack is best remembered for her role as Tiffany Welles in the fourth season of the ABC Television Drama Charlie's Angels ; replacing the departing Kate Jackson...

 and Joe Brooks

Joe Brooks

Joe Brooks was an American character actor best known for portraying Trooper Vanderbilt, the near-sighted soldier, in F Troop. He also played Dave Meyers in Gremlins. His interment was located in Forest Lawn - Hollywood Hills Cemetery.-External links:...

. The song was written by Brooks and recorded by Roberta Flack

Roberta Flack

Roberta Flack is an American singer, songwriter, and musician who is notable for jazz, soul, R&B, and folk music...

. Released as a single, it peaked at #24 on the Billboard Hot 100

Billboard Hot 100

The Billboard Hot 100 is the United States music industry standard singles popularity chart issued weekly by Billboard magazine. Chart rankings are based on radio play and sales; the tracking-week for sales begins on Monday and ends on Sunday, while the radio play tracking-week runs from Wednesday...

 and #37 on the R&B chart, and spent three weeks at #1 on the Easy Listening chart. As a solo act, "If Ever I See You Again" was Flack's third #1 on the Easy Listening chart.