"How Deep is Your Love" by the Bee Gees, was released as a single in September 1977.
The song was used as part of the soundtrack to the 1977 film Saturday Night Fever.
https://en.wikipedia.org/wiki/How_Deep_Is_Your_Love_(Bee_Gees_song)
https://en.wikipedia.org/wiki/Saturday_Night_Fever_(soundtrack)
https://en.wikipedia.org/wiki/Bee_Gees
The song was used as part of the soundtrack to the 1977 film Saturday Night Fever.
https://en.wikipedia.org/wiki/How_Deep_Is_Your_Love_(Bee_Gees_song)
https://en.wikipedia.org/wiki/Saturday_Night_Fever_(soundtrack)
https://en.wikipedia.org/wiki/Bee_Gees