Black Sabbath bassist, Geezer Butler, revealed the reason singer Ozzy Osbourne and guitarist Tony Iommi hated each other. During an interview with Loudersound, Butler discussed the relationship between his Sabbath bandmates back in the days:

“Ozzy had been to school with Tony, and they hated each other. Tony had bullied him at school, so it was me one day, Tony the next day, so Ozzy decided he’d go with me because he didn’t want to play with Tony. That’s how we started.”

After Butler formed Rare Breed along with Ozzy Osbourne, the bassist went on saying how came across Tony Iommi once again:

“We did two shows together in Rare Breed. Then I got fired from work and wanted to go into music full time, so we went round to Tony’s house to see if he knew any drummers.

”Bill (Ward) was there at Tony’s house. He said, ‘I’ll join the band if Tony does’ and there we went, first as Earth, then as Sabbath.”