Seventh creature?

I heard a midnight
Midnight lullaby
Sounds of the seventh creature
What is that? Answer it by yourself
But i won't, it's too horrible
You think i'm care?you ask you do
Oh majesty, please forgive me,but from?
Watch out, the seventh heard you, feel the horrible fangs being screeched
He's here, stay away, keep quiet
Gotcha, feel the pain
Goodbye