I tend to like hard music that has a lot of energy and doesn't have much discernible lyrics (unless you know the words).

That being said, I also have obscure hard core music lying around from the late 90s-00s.

My usual "those days" music is either Zao or Demon Hunter just because I have a lot of it and it fits both of the above requirements. Fall back bands are Project 86, Norma Jean, and Stretch Arm Strong

Can you work as you're listening to a hardcore music ?!