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Blizzard of Ozz was the debut studio album by English rock singer Ozzy Osbourne, released on September 20, 1980. It was the first album to feature guitarist Randy Rhoads, and was a commercial success, reaching number 7 on the UK Albums Chart and number 21 on the US Billboard 200. The album was certified quadruple platinum by the Recording Industry Association of America (RIAA) in 1997.