'Plaisir d'amour' is Basis for 'I Can't Help Falling In Love With You'
The song sung by Montgomery Clift while playing the piano is originally a vocal romance, "Plaisir d'amour", composed in 1784 by classical composer Jean-Paul-Égide Martini (August 31, 1741 - February 10, 1816), and was the basis for Elvis Presley's 1961 hit "I Can't Help Falling In Love With You" written in 1961 for the movie "Blue Hawaii".