" Angel of Death " is the longest track on the album Reign in Blood , spanning 4 minutes and 51 seconds , where the total duration of the album is 29 minutes . Additionally , it has one of the most conventional song structures on the album , featuring prominent verses and choruses , where most tracks on the album eschew them . Hanneman and King deliver their ' intricate riffs ' , which offer the few hints of melody on the album according to PopMatters reviewer Adrien Begrand , and Araya bursts out his piercing scream , with Lombardo performing beats of 210 beats per minute .