Unforgettable

Unforgettable is a song featured in Goodbye. It is performed by Jack Harmon and Quinn Fabray as they prepare to part ways from McKinley. The popular standard was most famously performed by Nat King Cole (and later Cole and his daughter, Natalie Cole). The version sung by Jack and Kurt was performed by Megan Mullally and Sean Hayes in the finale of Will and Grace.

Context
The song is sung by Jack and Quinn when Jack goes to tell her goodbye, citing that the first song they ever sang together was a Nat King Cole standard and he couldn't think of a better way for this chapter of the story to end.

Lyrics
Quinn: ''Unforgettable, that’s what you are. Unforgettable, though near or far. Like a song of love that clings to me, how the thought of you does things to me. Never before has someone been more.''

Jack: ''Unforgettable, in every way. And, forevermore, that’s how you’ll stay.''

Quinn and Jack: That’s why, darling, it’s incredible that someone so unforgettable thinks that I am unforgettable too.