<P> 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 . </P>
<P> 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 . </P>
who sang the morning after in the movie
who sang the morning after in the movie
Renee Armand
Renee Armand