The song was actually released in 1959.
It's the longest-running #1 instrumental in the history of the Billboard Hot 100's chart.
"Theme from A Summer Place" is a song with lyrics by Mack Discant and music by Max Steiner, written for the 1959 film A Summer Place, which starred Sandra Dee and Troy Donahue. It was recorded for the film by Hugo Winterhalter. Originally known as the "Molly and Johnny Theme", the piece is not the main title theme of the film, but a love theme for the characters played by Dee and Donahue.