Mercyful Fate

I see little demons, are they in my head?
I see little demons, fightin in my bed
Why did I go insane? Oh doctor kill the pain
Screams in the night, I hear another one died
Was it number 9, or was it me who cried
Why did I go insane? Oh doctor kill the pain
When I look in the mirror, my mind goes blank
My brain is burning up, Insanity...
When I look in the mirror, my mind is, Dead
Is it me on the other side?
I saw the look on your face, the night they took me away