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Hard rock and metal’s biggest stars are performing Black Sabbath<\/a> and Ozzy Osbourne<\/a> covers today at the Back to the Beginning concert.<\/p>\n Scroll down for a continuously updated list of who played which songs.<\/p>\n Osbourne, who has been battling a variety of serious health issues for several years, is making good on a promise to end his performing career on his own terms, performing a solo set in addition to reuniting with the original lineup of Black Sabbath one last time.<\/p>\n Guns N’ Roses<\/a>, Metallica<\/a>, Aerosmith<\/a>‘s Steven Tyler<\/a> and Sammy Hagar are among the wide range of artists who will be performing their own songs and Sabbath or Osbourne covers during the day.<\/p>\n Hagar previously revealed that he would be covering Osbourne’s “Flying High Again” in addition to performing “Rock Candy” from his days in Montrose<\/a>.<\/p>\n The show got off to a flying start at 1PM local time. So far we’ve already heard Mastodon cover “Supernaut,” Rival Sons performing “Electric Funeral,” Anthrax tackling “Into the Void” and Halestorm playing Osbourne’s “Perry Mason.” Stay tuned for more updates:<\/p>\n Read More: Let’s See How Wrong Our Black Sabbath Covers Predictions Were<\/a><\/strong><\/p>\n