Alongside being the pivotal figure of musical work in the history of metal that it is, which is good enough reason to listen to this album alone, this album also stands highly aloft as an absolute masterpiece of musical work on its own merits of being well written and heavy, regardless of the influence it holds. This is one of few albums which I listened to and throughout found a deep and insatiable need to mosh. One of few which kept me interested throughout the entirety of my listen where I never considered changing over to another album or to keep checking out new music. Influential. Masterpiece. Must-Listen!