Answer:
My teeth are sharp, my back is straight, to cut things up it is my fate.
A dragons tooth in a mortals hand, I kill, I maim, I divide the land.
According to the music industry, you can count on a midnight train and the devil to turn up here.
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What can be swallowed, but can swallow you?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?