It makes rap sound angelic.
Barber shop quartets are almost as bad but they don't get down to the subconscious level and make you wish your skull would just get it over with and explode. Techno does just that and in a relatively short time.
Given the arab ability to just at the thought of a djin, Kiowa veteran's songs might be exotic enough to spook the crap out of them, though personally I'm fond of them. But then, I like bagpipes and digeridoos.
You forgot New Zealand Maori Haka war chants....
Also real useful when the NZ *All Blacks* Rugby team wants to psyche out their opponents.