We've featured Andy Rehfeldt's amazing pop gone death metal (and others) covers here before, so why not keep that going? He's taken a few Ariana Grande songs and made them unbelievably heavy! Seriously, if Grande's music was like this I'd be the proud owner of her discography within minutes of hearing the first song by her.
Check out all of Andy's previous mashups here. Like what you hear? Buy Andy a beer!