Screamed metal vocals are a rhythm instrument and intensity amplifier. They serve as a focal point for the atmosphere that a band is trying to create. They provide a path for the audience to connect with music in a visceral way. It’s akin to listening to music in another language. I don’t need to understand Italian to appreciate opera or comprehend the emotion behind any particular moment, the presentation alone is enough when it’s done well.
The lyrics themselves serve different purposes depending on the band, genre, and topic. They often act as a signifier of identity, something that helps readers categorize genre and properly contextualize the complete package. Sometimes they’re just fun for the vocalist to bark, offering some combination of rhythm and sound that lets them perform with the intensity that they’re looking for. Some bands use more personal, meaningful lyrics, at which point they’re poetry. The DME piece is a brilliant glimpse into one kind of death metal lyricism but it’s far from exhaustive where the genre is concerned.
[0] http://www.darklyrics.com/lyrics/anaalnathrakh/eschaton.html
"We don't actually remember"
But by the way their lyrics are in plain English and make as much sense as you can reasonably expect from a rock band, and vocal style is on the more comprehensible end of death metal spectrum.
https://www.youtube.com/watch?v=8256VJ4hkJU
If i were allowed only one metal track to take on an island, i'd chose this one.
Do you feel what I feel?
The philosopher You know so much about nothing at all
So you preach about how I'm supposed to be Yet you don't know your own sexuality