Need Hardcore Instrumentals for Improv Battles.

I am looking for something heavyish to improv scat hardcore battle with my friends (i.e. make hardcore lyric noises to a track w/o vocals). I am looking for something along the lines of expire/backtrack.

We normally do this with instrumental rap tracks but to do the same with hardcore was an epiphany. Literally anything that fits the criteria would be legendary. I tried googling but I found nothing close to what I need.

Thank you.