Black Sabbath (heavy metal band)
With the heavy metal, the style of the Black Sabbath was solidified, but strongly hybridized with the progressive rock, Celtic folk and blues electric fusion of Led Zeppelin, with influences also of aggro-prog bands like King Crimson and Jade Warrior. End the years 1960 culminated in the rock being bored with itself, and then became progressive and Beatles British and American blues-rock guitarists intended for more long, complex works, essentially turning progressive rock in nature. "Progressive" is perhaps a misnomer, as there is no "progress" in re-incorporating influences of classical music, but the rock was progress of simplistic pop of the decade from 1950 to incorporate new styles and vastly adulterate the framework of blues rock (the Syncopated blues is a version of Celtic and German folk-pop, formed in America the mixture of cultures, like most of his music, in all continents, it features easily transposed chord progressions and a song basic structure that allows easy improvisation melodic).