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| 1963 | Black Panthers |  |
| Birmingham Founder Member of the Black Panthers |
| 1966 | Black Sabbath |  |
| Birmingham Founder Member of Approach, foreunner of Black Sabbath |
| 1967 | Polka Tulk |  |
| Birmingham Founder Member of the Polka Tulk Blues Band |
| 1968 | Black Sabbath |  |
| Birmingham Founder Member of Black Sabbath |
| 1968 | Earth |  |
| Birmingham Founder Member of Earth |
| 1968 | Polka Tulk Blues Band |  |
| 6th April Tony Iommi & Bill Ward were in a band called Mythology and Geezer Butler with Ozzy in a band called Rare Breed, these groups broke up and formThe Polka Tulk Blues Band |
| 1970 | Black Sabbath |  |
| Black Sabbath releases a first album, "Black Sabbath" |
| Black Sabbath release the Album, "Paranoid" |
| 1971 | Black Sabbath |  |
| Black Sabbath release the Album, "Masters of Reality" |
| Black Sabbath release the Album, "Volume 4" |
| 1973 | Black Sabbath |  |
| Black Sabbath release the Album, "Sabbath Bloody Sabbath" |
| 1976 | Black Sabbath |  |
| Black Sabbath release the Album, "Technical Ecstasy" |
| 1977 | Black Sabbath |  |
| Ozzy left Black Sabbath in October of 1977 to try and form the first incarnation of "Blizzard of Ozz" |
| 1977 | Dismissal |  |
| Ozzy left Black Sabbath in October of 1977 to try and form the first incarnation of "Blizzard of Ozz" |
| 1978 | Black Sabbath |  |
| Black Sabbath release the Album, "Never Say Die" |
| Rejoins Black Sabbath |
| 1979 | Dismissal |  |
| Leaves Black Sabbath for a 2nd time |
| 1980 | Blizzard of Ozz |  |
| Founder Member of Blizzard of Oz |
| Sep With his new manager and wife Sharon, Osbourne releases the first album, "Blizzard of Ozz," with his new band, Ozzy Osbourne & Blizzard of Ozz - guitarist Randy Rhoads , bassist Bob Daisley and drummer Lee Kerslak |
| 1980 | Composition |  |
| Ozzy releases Blizzard Of Ozz with the hit "Crazy Train" |
| 1980 | Law |  |
| Founder Member of Law |
| 1981 | Blizzard of Ozz |  |
| Blizzard of Ozz tours after the release of "Diary of a Madman.", during a performance, a bat is thrown onto the stage by a fan and Osbourne bites its head off while supposedly thinking it's fake |
| Ozzy releases Diary Of A Madman with the hits "Flying High Again," "Over the Mountain," and "You Can't Kill Rock & Roll |
| 1981 | Composition |  |
| The Blizzard of Oz release the Album, "Diary of a Madman" |
| 1982 | Arrest |  |
| Alamo Ozzy is arrested for urinating on a part of the Alamo in Texas |
| 1982 | Black Sabbath |  |
| Ozzy releases the live LP Speak Of The Devil with the favorites "Paranoid" and "Iron Man / Children Of The Grave" medley |
| 1982 | Blizzard of Ozz |  |
| Dec Osbourne is signed to Epic Records after showing up drunk at a meeting and biting the head off a dove |
| 1982 | Composition |  |
| Diary Of A Madman is certified platinum |
| 1982 | Marriage |  |
| Marries Sharon Arden, daughter of Black Sabbath's manager |
| 1983 | Composition |  |
| Ozzy releases Bark At The Moon with the hits "Bark At The Moon" and "Rock 'N' Roll Rebel |
| 1985 | Black Sabbath |  |
| Black Sabbath briefly reunites with Osbourne for a Live Aid concert |
| 1985 | Composition |  |
| Releases Album, "The Ultimate Sin" |
| 1985 | Live Aid |  |
| Black Sabbath briefly reunites with Osbourne for a Live Aid concert |
| 1985 | Rock In Rio |  |
| Ozzy performs at the 'Rock In Rio' concert. |
| 1986 | Composition |  |
| Bark At The Moon and The Ultimate Sin are certified platinum |
| Ozzy releases The Ultimate Sin - which became his first Top 10 LP in the USAand had the favorite "Shot In The Dark |
| 1987 | Composition |  |
| Releases Album, "Tribute", dedicated to Randy Rhodes |
| 1990 | Composition |  |
| Releases Album, "Bark at the Moon" |
| Releases Album, "Just Say, Ozzy" |
| 1991 | Composition |  |
| Releases Album, "No More Tears " |
| 1992 | Black Sabbath |  |
| 15th Nov Iommi, Butler, and Appice back Ozzy Osbourne as part of what's billed as the singer's final live appearance |
| 1993 | Composition |  |
| A double-live album, "Live and Loud," is released, the live version of "I Don't Wanna Change the World," earns Osbourne a Grammy Award for "Best Metal Performance." |
| 1993 | Grammy |  |
| A double-live album, "Live and Loud," is released, the live version of "I Don't Wanna Change the World," earns Osbourne a Grammy Award for "Best Metal Performance." |
| 1995 | Composition |  |
| Ozzy returns with a new album, "Ozzmosis" |
| 1996 | Ozzfest |  |
| Osbourne headlines the first "Ozzfest," a summer festival tour that features hard rock and heavy metal bands |
| 1997 | Black Sabbath |  |
| "The Ozzman Cometh" is released. A double-CD retrospective of Ozzy's work, it includes previously unreleased rehearsal tapes of four classic Sabbath songs |
| 1997 | Composition |  |
| "The Ozzman Cometh" is released. A double-CD retrospective of Ozzy's work, it includes previously unreleased rehearsal tapes of four classic Sabbath songs |
| 1998 | Black Sabbath |  |
| Oct Two-CD set "Reunion" is released, featuring all four of Black Sabbath's original members (Iommi, Osbourne, Butler, Ward) |
| 2002 | Osbournes, The |  |
| Ozzy Osbourne stars in MTV's reality sitcom "The Osbournes " which draws 4.1 million viewers to its regular Tuesday time slot |