The crazy and unpredictable story of Black Sabbath is the clearest example of the greatness of British rock music, even in its most extreme forms. Ozzy, Tony, Geezer and Bill experienced many incredible events together, going through a series of quarrels and reconciliations, ups and downs. And every time it seemed that their union had come to an end, they found the strength to return to delight their fans again and again with albums and live performances. Joel McIver tells the story of Birmingham's most sinister and debauched band without the slightest embellishment. In his story, not a single one of those musicians is forgotten who managed to give the group a bit of their talent over the many years of its existence. The author carefully studied the difficult relationship between the band's frontman Ozzy Osbourne and the rest of its members. The result of the titanic work that McIver did was not just a book, but a perfect, absolutely complete guide to the Black Sabbath universe. Every fact, every smallest detail is obtained here first-hand, directly from the people who stood at the origins of the group, and from those who accompanied the musicians from the very first day, through many crises, problems and disappointments, right up to the present day.