"The Morning After" the best original song Oscar winner of 1973 is from which 1972 film?

"The Morning After" (also known as "The Song from The Poseidon Adventure") is a song written by Al Kasha and Joel Hirschhorn for the 1972 film The Poseidon Adventure. It won the 1972 Academy Award for Best Original Song at the 45th Academy Awards in March 1973. After the film's release, it was recorded by Maureen McGovern and became a hit single for her following its release in May 1973. It was a number-one hit in the US for two weeks during August 1973, and became a Gold record.

The song was written in March 1972 by 20th Century Fox songwriters Al Kasha and Joel Hirschhorn, who were asked to write the love theme for The Poseidon Adventure in one night. The finished product was called "Why Must There Be a Morning After?" but changes by the record label resulted in the song's more optimistic lyric of "there's got to be a morning after". In the end titles of the film, it is called "The Song from The Poseidon Adventure", though it would become best known by the title of the single, "The Morning After".

The song is performed in the film by the character of Nonnie, played by Carol Lynley, but is actually sung by a vocal double, Renee Armand. It appears twice, during a warm-up rehearsal and then later during the New Year's Eve party early in the film. The lyrics relate to the themes of the film, as a band of passengers survive the capsizing of the ship SS Poseidon and have to escape the sinking wreck.