Based on the chapters : “The truth will set you free” & “No use crying over spilled blood” from “My roommate is a vampire”.

Lyrics :

I'm a vampire, I'm a monster, just a pony that lives in the shadows.
I'm a vampire, I'm a demon, hey Octavia stay away from me.

I'm a vampire, I'm a monster, just a pony that lives in the darkness..
I'm a vampire, I'm a demon, hey Octavia stay away from me.

Download : https://pony.fm/tracks/37191-drixale-im-a-vampir3

Art : https://derpibooru.org/1210196

My roommate is a vampire : https://www.fimfiction.net/story/36388/my-roommate-is-a-vampire

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I know, I sound edgy doing rap, lol.