top extreme music genres
Political Rap
This genre was developed in the 80′s, with The Last Poets and Gil Scott-Heron, Public Enemy being some of the first. Most songs that fall under this category aim at inspiring rappers to address social and political issues. Common artists that fall under this category include: Immortal Technique, Dead Prez, and Looptroop.
“Chill” Non-Vocal
Chill music, or “chillout” came from the early 90s. The term Chill was used to describe any “mellow, slow-tempo music made by contemporary producers in the electronic music scene.” Common artists for this one: Lux, Massive Attack, and Afterlife.
Death Metal
Death metal, or american death metal, is an extreme sub-genre of heavy metal. Most music that falls under this genre has loud drums, distorted guitars, deep heavy vocals, and multiple tempo changes. The genre originated in the 80′s with modern artists including Oceano, Suicide Silence, and Winds of Plague.
Speed Metal
Speed metal, or cybergrind, is an extremely fast passed sub-genre of heavy metal. This genre is related to death metal and mathcore genres. Modern artists include Plague and Abramelin.

Hoomii
Hoomii is Mongolian throat singing. This is definitely an extreme genre of music. For most people this genre is very difficult. A throat singer can produce two and even four notes at one time giving the effect of a deep sound, medium pitch sound, and high pitch all at the same time. A full orchestra from one person.
Edited: August 9th, 2011

