Review – Ozzy Osbourne Lit up the Dark Souls of Denver Denby GardinerOctober 3, 2018 Throughout the '70s, Black Sabbath and Ozzy Osbourne ruled the darkness of heavy metal. After his firing from Black Sabbath in 1979, Osbourne went on to rule th... 303 MagazineConcert ReviewsDowntown DenverFeaturedMusic4 min read