Corrected entry: The movie takes place in 1977. When the two leads arrive at the party, they are playing the Earth, Wind, and Fire song, "September" which was not released until 1978. Also, just before they arrive, the soundtrack is playing "Boogie Wonderland," another Earth, Wind, and Fire song that also was not released until 1978. (The band members at the party look like they are supposed to be Earth, Wind, and Fire themselves.) Later on, the soundtrack plays the Rupert Holmes song, "Escape (Pina Colada). That was not released until 1979.