Madhouse-Anthrax
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Doctor
I'm sorry for possibly being obvious, but I'm going to have to go with Mass Effect based off of the monolith in the space-type landscape. Going by your characters colour scheme, I'm partial to the original and more optimistic Mass Effect OST

https://www.youtube.com/watch?v=eBnCcC_rEdk
The Old Republic - Revan's Theme
I see reaper and assassin, but hear darth...
[tot=Charole] [flower=Charole]
Aw beans, thats what I get for trying to use the mobile layout and being overwhelmed.
Any of the slightly creepier, music box tracks from the Princess Tutu OST. Like this one: https://www.youtube.com/watch?v=ha0Y-4xR3Uk

Calm Before the Storm-Nobuo Uematsu, Masashi Hamauzu, and Junya Nakano
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After a rival kingdom funded the sudden and bloody coup that shook your country to the core and killed your parents, you absconded to the woods where you learned to steal and fight to survive. You grew older and began gathering people you found useful to your side until you had yourself your own little gang of ruffians and thugs, all displaced by the revolt. Now that you're old enough, you've become the Champion of the people, fighting against the colonialist overlords and generally fucking their shit up whenever you can.
Cantus Inaequalis-Karl Jenkins
(, THAT. SOUNDS. SO EPIC. : D)
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Had to think of Tag, You're It/Milk and Cookies by Melanie Martinez with the HA
Breezy-Nobuo Uematsu
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If pressed, would concede that there were, indeed, some fond memories of their childhood. Those were greatly overshadowed by the almost photographic memories they had of the experiments their occult-obsessed father would perform on them in an attempt to unlock the human psyche's otherworldly abilities, but somewhere in their head there are a few memories of her father bringing in the stuffed animals and the kettle and announcing that "it's time for tea!". Eventually, though, their father became disillusioned by his repeated failures and denounced the supernatural. Everything would have been dandy about that except that he decided that Scarlet was too painful a reminder of the guilt he carried for what he had done to his own child. So he did what any rational father would do and threw her into an abandoned mineshaft. It was a pity he didn't stick around for 30 more seconds to see the slumbering ghosts and demons wake up to investigate all the commotion. It was even more of a pity for him that the supernatural creatures took quite a liking to Scarlet and decided to raise them as their own. And now that they're all grown up and eager to see the world, they're going to first pay a visit to their estranged father and let him know that it's "time for tea."