Disclaimer: HP is Jo's and DYWBAS is Disney's.
Dumbledore (knocks on Snape's office door):
Severus?
Are you really gonna kill me?
I need to hear it now
I know that I've betrayed your trust
I did as I must
But you've taken a vow
You've got a right to hate me
I understand
But you have a job to do
Are you really gonna kill me?
You can't let Draco kill me.
(Go away, Dumbledore!)
Oops, too soon…
(time passes)
Are you really gonna kill me?
'Cause I haven't got much time
Voldemort will be here any day
He needs to get his way
I swear, it's not a crime
Have pity on this old man
Give me a quick death
Oh, and Harry has to die too…
(Yeah, sorry about that.)
(musical interlude - Snape kills Dumbledore)
Snape (kneels beside Dumbledore's grave):
Dumbledore, I know you're in there
I can't get over what I've done
You said "Have courage", and I'm trying to
It's not Hogwarts without you
I wish I could just run
We used to have each other
Now I'm all alone
What am I gonna do?
I can't believe I really killed you…
(Camera pans from Snape leaning against the coffin to Dumbledore inside of it.)