I'm not a metal head, I'm an old softy. Give me music that is relaxing and easy to listen to. I can turn the volume down for ambiance or turn the volume up to actually listen to the music. I find metal music very annoying, disturbing and wanting me to reach for my headache medication.
In case anyone is interested, here's a list of heavy metal bands and the countries they originated from:
https://en.wikipedia.org/wiki/List_of_heavy_metal_bands
Music is the Heartbeat of the World
Let's flip a coin; heads I win, tails you lose. Fair enough?