Ozzy Osbourne decided to announce his retirement in the fall of 1992, despite the fact that his career was riding high on the strength of the No More Tears album.

He committed to play two farewell shows, Nov. 14 and 15, in Costa Mesa, Calif., and asked his old band, Black Sabbath, to do the honor of opening the shows. But that's not how things worked out.

This plan might have sounded good to Ozzy and Black Sabbath guitarist Tony Iommi, but it wasn't so appealing to vocalist Ronnie James Dio – who, according to Iommi's autobiography Iron Man, told the guitarist: "I'm not doing that. I'm not supporting a clown."

Dio made his case, then left the band, leaving Iommi to figure out another plan of attack. Enter another powerhouse vocalist from their native Birmingham, England, Rob Halford.

Halford, having recently left Judas Priest behind, gladly accepted the invite to share the stage with Black Sabbath to perform the two concerts.

“[Iommi] sent me the set list and I got all my albums out and started listening to them,” Halford later recalled, “not that I had to listen to them anyway because it’s always in my head."

Watch Rob Halford Front Black Sabbath in 1992

Not surprisingly, Halford delivered the goods. He reprised this role again at a concert in 2004, when Osbourne was ill.

Of course, Osbourne's retirement was short-lived. As it turned out, the reason for his decision – a diagnosis of multiple sclerosis – was a mistake. The reality is that he had a genetic condition called Parkin syndrome, which has similar symptoms. He resumed recording in 1995 with the release of Ozzmosis.

Black Sabbath Albums Ranked

From Ozzy to Dio and beyond, we look at all of the band's studio LPs.

Gallery Credit: Eduardo Rivadavia

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