anus.com definition of Death Metal:
Total nihilism, or lack of belief in any preconceptions, in sound. Mostly rhythm music, this genre uses muffled and tremelo strummed power chords or single-string playing to hammer out a machine code of intricate riff textures and the geometries of convergent sound. Its structuralism matches its grim but self-empowering worldview. Distinguished by bass-end tuning and guttural chanting vocals, death metal exists underground by deliberately disrupting consonant aesthetic and programming the human mind at the lowest levels with natural, intuitive rhythms.
To see where I got that definition click the below link:
http://www.anus.com/metal/about/genre.html
The Death Metal Institute definition of Death Metal:
death metal is loud music using distorted rock instrumentation and guttural, gritty, screaming vocals. its heritage includes industrial music, heavy metal, and experimental neoclassical music. the main mechanism of composition is rhythm. death metal bands structure riffing from the inherent directions present in relative motion of tone wrapped around persistent multiple rhythms embedded in double-picking technique.
most people will agree that slayer were the proto-death metal band who in 1983-85 launched bands like possessed, celtic frost, bathory, sepultura and morbid angel into the new genre. from there the music has developed in multiple directions, with minimalist grinding artists like blood on the same shelf as a progressive band like atheist or gorguts. however, somehow it has kept its integrity, in large part thanks to keeping "underground" by refusing to embrace mainstream media or the musical theory and aesthetic of music that would make it on the radio.
in the current time death metal is nearing two decades of existence. since the first death metal bands, the techniques and conceptual components to the music have improved quite a bit, yet the spirit remains the same in death and black metal bands worldwide. to improve the study of death metal for a metal fan or ethnomusicologist unconnected to the death or black metal movements alike, we have listed some useful pages and then classic bands below.
To see where I got that definition click the below link:
http://www.deathmetal.org/death_metal.html
All Death Metal bands lyrics are Nihilistic-name 1(except christian death metal bands) which isn't?