Way back in the mists of time, in the days when rock giants walked the earth, the name Ozzy Osbourne was synonymous with the subversive and dark. Back then, Ozzy was the singer in Black Sabbath, and they meant business. A four-piece formed from the ashes of two locally well-known groups called The Rare Breed (Ozzy and bassist Geezer Butler) and Mythology (guitarist Tony Iommi and drummer Bill Ward), all four founding members of the original Black Sabbath grew up within half-a-mile of each other. This biography tells the story of how they made that dream come true — and how it then turned into a nightmare for all of them. How at the height of their fame, Sabbath discovered they had been so badly ripped off by their managers they did not even own their own songs. How they looked for salvation from Don Arden — an even more notorious gangster figure, who resurrected their career but still left them indebted to him, financially and personally. And how it finally came to a head when in 1979 they sacked Ozzy: 'For being too out of control — even for us,' as Bill Ward put it. The next 15 years would see a war break out between the two camps: the post-Ozzy Sabbath and Ozzy himself, whose solo career overshadowed Sabbath to the point where, when he offered them the chance to reform around him again, it was entirely on his terms. Or rather, that of his wife and manager, daughter of Don Arden — Sharon Osbourne.

AC/DC moved to Britain from Sydney in 1975, and soon set up a residency at London's Marquee Club. Their short hair (including the odd mullet), loud rock and attitude chimed well with the lingering pub rock and soon-to-be punk crowd. They weren't really a band for guitar solos, and singer Bon Scott was the original bike-riding, speed-snorting, fighting man. An ex-convict he lived life fast and short; he died in February 1980, just before BACK IN BLACK, their huge-selling album, took off and the second period of AC/DC (with Brian Johnson as lead vocalist) was ushered in. BACK IN BLACK has gone on to sell 45 million copies worldwide, and as the band have become a global phenomenon so their reclusiveness has increased. Mick Wall, the don of heavy metal writing, seeks to penetrate the wall around the Young brothers, and write the first authoritative, in-depth critical account of AC/DC.