With another band already playing around England by the name of Earth, Iommi & co. were forced to change their name, taking "Black Sabbath" from the classic horror movie. With the name switch came a change in musical direction -- the band would explore dark lyrical subjects, while the music would be repetitive, plodding, and H-E-A-V-Y. In the process, Sabbath created the blueprint for heavy metal with such incredibly influential, all-time classic releases as their 1969 self-titled debut, 1971's Paranoid and Master of Reality, 1972's Vol. 4, and 1973's Sabbath Bloody Sabbath, becoming one of the world's top hard rock bands in the process. Iommi's guitar playing propelled such metal standards as "Black Sabbath," "N.I.B.," "Paranoid," "Iron Man," "War Pigs," "Into the Void," and "Children of