I, too, got back into some metal while reading TUC. And I, too, found that the lyrics which I used to find embarassing and comically dark, could totally have been written about the story.
Here's a song:
Dimmu Borgir - Mourning Palace. (Ignore the video.)
Here's the lyrics. This song is
clearly about the crimes the ordealmen commit on the field appalling, and how they're damned for it, and how they lament it afterwards. For Satan, read Ajokli.

Daylight has finally reached it's end
As evenfall strikes into the sky
Far away in the dark glimpsing moonlight
Sickening souls cry out in pain
Whispering voices summoning screams
Waiting for Satan to bless their sins
Blackhearted angels fallen from grace
Possessed by the search for utter darkness
Hear the cries from the Mourning Palace
Feel the gloom of restless spirits
Hear the screams from the Mouring Palace
Feel the doom of haunting chants
Eternal is their lives in misery
Eternal is their lives in grief
Abandoned in a void of nothingness
A chain of anger, a fetter of despair
In this garden of depraved beings
This unsacred place of helpless ones
Satan blessed the creatures
Inswathed them in endless night
(Also, the Dark Souls 3 soundtrack that was already mentioned. That was great.)