(UTC) 

  
 Your wrong Zao is Christian Death Metal, but still they are death metal band.  
 Your retarded Bleeding Through is death metal: Melodic Death Metal DUR DUR 
 And finally... The Number Tweleve is so death metal, because they are using grindcore. Grindcore is a subgenre of Death Metal. 
  3:31, 19 June, 2009