CHRISTINE
In sleep he sang to me, in dreams he came.
That voice which calls to me, and speaks my name.
And do I dream again, for now I find.
The Phantom of the Opera is there, inside my mind.

PHANTOM
Sing once again with me, a strange duet.
My power over you grows stronger yet.
And though you turn from me, to glance behind.
The Phantom of the Opera is there, inside your mind.

CHRISTINE
Those who have seen your face, draw back in fear.
I am the mask you wear
PHANTOM
It's me they hear.

CHRISTINE/PHANTOM
Your(my) spirit and My(your) voice, in [bad word] 
The Phantom of the Opera is there inside my(your)mind.