Just a few months after the release of their self-titled debut, Black Sabbath went back into the studio to begin their second LP. This time around they had an even more stunning arsenal of songs, including "War Pigs," "Paranoid," "Iron Man" and "Fairies Wear Boots." Guitarist Tony Iommi was churning out mind-blowing riff after riff, and the result is an absolute masterpiece the group never quite managed to top. The disc was originally called War Pigs, but at the height of the Vietnam War the label didn't want to anger segments of their audience. They also felt that "Paranoid" was a more radio-friendly single. They were correct in that regard. The song only reached Number 61 on the Billboard Hot 100, but it's been played on the radio about ten billion times since, and in many ways has become their signature song. No matter how much success they had after Paranoid, the songs on this disc have always been at the center of their live set list.