Complicated, intense, fast-paced instrumentals. Often accompanied, but not always, with references to death and satan, probably to give the band an excuse to use some really good sounding guitar riff they heard somewhere. Some people can't tell one death metal song from another, but they probably rarely ever listen to it.
"No one cares about your opinions on music"
- Editor of Boing Boing magazine
Stop using your opinions as definitions!