Durin's bane

Into the abyssal caverns below
The demons of might have fled
These shadowy winged beasts
That give off horror and dread

Taller than the greatest man
With a whip of blistering fire
Once rampant among the land
Their situation is now more dire

The most feared of all creatures
Among the dark lords' forces
Standing with the might of Morgoth
These demons battled the Noldor

Aiding in the dark quest
To recover The Silmarils
With a host of evil spirits
Mighty dragons and a vampire

In the deep caverns of Moria
Did one such creature dwell
And utterly was thrown down
By the hands of the grey one

But in this effort, both were slain
The grey one to return again
As the great wizard of white
To endure the fight against evil

The dark lord Melkor's servant
With his golden ring of power
And later burning eye of fire
Beholds the demons of might