*Frank Trapper/Corbis via Getty Images*

The tributes come just weeks after Osbourne performed one final time with Iommi, Butler, and original drummer Bill Ward during Black Sabbath’s monumental Back to the Beginning farewell concert. Held on July 5 in their hometown of Birmingham, England, the show was a historic reunion for the original Sabbath lineup.

“I just can’t believe it! My dear dear friend Ozzy has passed away only weeks after our show at Villa Park,” Iommi wrote. “It’s just such heartbreaking news that I can’t really find the words — there won’t ever be another like him. Geezer, Bill and myself have lost our brother. My thoughts go out to Sharon and all the Osbourne family. Rest in peace Oz.”

In his own post, Butler reflected, “Goodbye dear friend — thanks for all those years — we had some great fun.”

“Four kids from Aston — who’d have thought, eh?” he added. “So glad we got to do it one last time, back in Aston. Love you.”

Ozzy Osbourne, Tony Iommi, Geezer Butler, and Bill Ward formed Black Sabbath in 1968, creating what is widely considered the blueprint for heavy metal music. The bond they shared, forged in Birmingham’s working-class neighborhoods and amplified on stages across the world, shaped one of the most influential legacies in music history.

Content for this summary was derived from original reporting by ABC Audio, as featured on 105.7 The Point