I listen to a lot of Death Metal, I think Progmetal is much better though.
are you serious !!!
Seriously, do you like it too? It's a huge genre!
Silas Alben attended Harvard College where he received in 1999 A.B 
Is he a metal musician or something?
Silas D. Alben is an American mathematician and also an Assistant Professor 
Death metal
who is he
Death metal
 who was his the lyrical themes be
Did he do anything to forward the genre of Metal?