Wow, what I read on this page about black metal is probably the biggest nonsense since what I've read here about trance music.
The difference between black and death metal is not the vocals, there is plenty of black metal that is even clean sung. Black metal is not about extreme metal, about blastbeats, in fact: a lot of well respected black metal bands avoid blastbeats all together. Black metal is not about satanism, that's just the popular poserblack. Sensible bands try to avoid satanism all together and utilze other themes 'winter' is an often used one.
Black metal is not about anti popmusic, or anti electronic music. True black metal is linked to electronic genres such as ambient, noise and industrial and encorporates elements from that.
So what defines black metal?
What sets black metal appart from death metal is effectively (for the record) what sets trance appart from techno & what sets ambient appart from lounge.
Namely: More monotone, more rooted in classical music theory, less rithmic, more atmospherical, more about the emotion, less about the grooves and melodies that function as a chordprogression.
Noteable black metal albums:
Arcuturs - Aspera Hiems Symfonia
Vinterriket - Der Letzte Winter
Ulver - Bergtatt
Darkspace - Dark Space I
The Kovenant - Nexus Polaris