Nightmare Moon: "I live inside you forever!"
Luna: "No!"
NM: "With darkness itself by my side!"
Luna: "Nooo!"
NM: "And I know that now and forever they'll never be able to seperate Luna from Nightmare!"
Luna: "Can't you see it's over now? It's time to die!"
NM: No, not I! Only you!"
Luna: "If I die, you die too!"
NM: "You'll die in me, I'll be you!"
Luna: "Curse you, Night! Set me free!"
NM: "Can't you see? You ARE me!"

I just adore this song.
Song: Confrontation from Dr. Jekyll and Mr. Hyde