[HELL BENT FOR JUDAS] Friday, January 27, 2012 8:03:59 PM
In my opinion the distance between the lowest and the highest notes on the vocal performance of "DISSIDENT AGRESSOR"
is around two octaves. I think HALFORD sings higher than "C4"(Middle C or 261,63 Herz) on this song from start to finish.
But maybe you can measure this with an adequate software.