Original sentence: His deep, guttural growl was enhanced and manipulated with studio production to make the vocals as harsh as possible.The album was important to the progression of death metal, due to it's then-unmatched brutality and the vocal stylings of vocalist/bassist Glen Benton
Edited sentence: His deep, guttural growl was enhanced and manipulated with studio tricks to make the vocals sound truly possessed and tortured.The album was a milestone in the death metal genre, due to its then-unmatched brutality and the hair-raising vocal stylings of vocalist/bassist Glen Benton