Geniuses in extreme music

Kris "Garm" Rygg (Ulver, Head Control System, ex-Arcturus, ex-Borknagar)
Cornelius Von Jakhelln Brastad (Solefald, Sturmgeist, Castimoniae, Persona)
Lars "Lazare" Nedland (Solefald, Age Of Silence, Ásmegin, Borknagar, ex-Carpathian Forest)
Jan Axel Blomberg aka Hellhammer (Arcturus, Age of Silence, ex-Antestor, Carnivora, ex-Covenant (Nor), ex-Jørn, Mayhem (Nor), Mezzerschmitt, ex-Mortem (Nor), ex-Shining, ex-The Kovenant, Thorns, Troll (Nor), ex-Vidsyn, Dimmu Borgir, Winds (Nor))
Dan Swanö (Altar (Swe), Another Life, Bloodbath (Swe), Brejn Dedd, Canopy, Diabolical Masquerade, Edge of Sanity, Godsend (Nor), Incision, Infestdead, Karaboudjan, Katatonia, Maceration, Masticate, Nightingale, Odyssey (Swe), Overflash,Pan.Thy.Monium, Ribspreader, Route Nine, Star One, Steel (Swe), Total Terror, Unicorn (Swe), Mahlstrøm)
Steinar Sverd Johnson (Arcturus)
Anders Nyström aka Blackheim (Katatonia, Bloodbath (Swe), Diabolical Masquerade, ex-Bewitched (Swe)
 
Some of the best song-writers within extreme/diverse/dynamic music:

Mikael Åkerfeldt
Anders Nyström
Dan Swanö
Steinar Sverd Johnson
Devin Townsend
Karl Sanders
Tschort
 
Dan, Chuck, Mieszko, Jorgen Sandstorm (and Lord K heh), Karl Sanders, Akerfeldt, Lombardo and probably a few more worthy people.

Peter Tägtgren is the most overrated person in extreme music though, in my opinion.
 
I don't really consider Hellhammer to be a "genius" seeing he doesn't write that much music, but he sure is a phenomenal drummer!
And I really agree on Cornelis, Chuck and Sverd.
 
Lokasenna said:
I don't really consider Hellhammer to be a "genius" seeing he doesn't write that much music, but he sure is a phenomenal drummer!
And I really agree on Cornelis, Chuck and Sverd.

He writes all his drum parts and I think those are genious! Nice to see another Solefald fan floating around!