Here's some badass legitimately scary and violent music. I always play this for my students when I want to freak them out. It's a good thing they don't speak German though, otherwise I'd never get away with it...
Alfred Schnittke - Seid nuchtern und wachet (Faust Cantata); VII. Es geschah (It came to pass)
Malmö Symphony Chorus
Malmö Symphony Orchestra
Inger Blom
Conducted by James DePreist
https://www.youtube.com/watch?v=dR78SQeRiC4
@Siren_six
Yep, I remember seeing that. Pretty awesome.