Natalie Cole is best identified for her 1991 album, Unforgettable... with Love, on which she sings 22 songs from the Nat King Cole collection , including "Unforgettable" as a duet with his late father. Cole uses his father's original recording and adds his voice; the music is the same, the lyrics are sung the same way, everything what about the cover is the same as the original. The cover still has Nat King Cole's velvety voice, the soft piano playing in the background and the unchanged tempo. In the end, the only thing that sounds different between the two songs is the female vocals incorporated into the cover. Conversely, those who think there are no differences between the two are people who are blind to what's beneath the surface of the song. “Unforgettable” stands out from any other cover that has come out, and is successful not only for its originality but also for sentimental reasons. The purpose, meaning and audience of the two songs are what makes the cover exceptionally special of the original. "Unforgettable" is a tribute to ...