The inspiration for the kings of rock Metallica. What else is there to say. Listen to this album if you care anything about the origins of the most sucessful heavy metal band in history. The long epic songs and the "Almighty Riff" rule this album from the beginning to end. The drums may sound cheesy, but what it comes down to is the fact that these guys made this music in a wave of music that was more powerful than any other music movement in the last hundred years. Of the thousands of albums that came out in the four most important years in the history of heavy metal, this album is the cream of the crop.