Elvis Costello
I don't know about Elvis, but I think this might be one of the best uses of a song in film.
"She may be the face I can't forget
A trace of pleasure or regret
May be my treasure or the price I have to pay
She may be the song that summer sings
May be the chill that autumn brings
May be a hundred different things
Within the measure of a day"
It's a great song on it's own but it actually makes the movie.