Alex Webster: "For me, Immolation is one of the bands that define the sound of pure heavy metal. They have that particular dark, eerie vibe that distinguishes death metal form thrash and other subgenres. That's imoprtant--death metal is more than low-tuned thrash with guttural vocals; it has unique musical characteristics, too. Immolation contributed a lot to the development of these characteristics, most notably with the use of pinch harmonics in rhythm guitar parts. They also took dark melodies and complex,unnatural arrangements to a level not previously heard in death metal."