The 7 Levels of Rock Music, Explained

From Chuck Berry and Elvis Presley to Black Sabbath, Metallica, Death, and Napalm Death, this video explains the 7 levels of rock and metal that transformed rock and roll into some of the heaviest music ever created. Explore the evolution from early rock and roll and garage rock to hard rock, heavy metal, thrash metal, death metal, and grindcore. SUBSCRIBE:')