Establishing himself as heavy metal's Prince of Darkness early on as vocalist for the genre-defining Black Sabbath, Ozzy Osbourne showed an enviable perseverance as he remained one of metal's most powerful voices for over 50 years and became an international multimedia superstar along the way. After parting ways with Sabbath in 1979, Osbourne quickly launched a solo career, burning through the '80s in a storm of controversy while making landmark albums like 1980's Blizzard of Ozz and 1981's Diary of a Madman. Ozzy's impeccable showmanship and knack for surrounding himself with...