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
our 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
[ Lyrics from: http://www.lyricsfreak.com/a/andrew+lloyd+webber/phantom+of+the+opera_20291021.html ]
phantom:
it's me they hear

together:
your/my spirit and my/your voice
in one combined
the phantom of the opera is there
inside my/your mind

phantom:
in all your fantasies
you always knew
that man and mystery

christine:
were both in you

together:
and in his labyrinth
where night is light
the phantom of the opera is there/here
inside your/my mind

phantom:
sing, my angel of music

christine:
he's there, the phantom of the opera

phantom:
sing, sing for me.
sing, my angel of music.
sing for me!