Shin Megami Tensei IV: Demon Lord Lucifer Phase 2 (Extended) 

Well, this is the demon lord's theme when he enters his second phase, where his appearence goes from "What the fuck," to "HOLY SHIT WHAT THE FUCK." I just... I can't even. This theme is odd. I like the drum beat though.
My Twitter: / dark_angel_0519
I do not own this game or its soundtrack. That stuff belongs to Atlus.