Black Sabbath singer Ozzy Osbourne's sisters recall their final interactions before his death at 76, noting he was frail but still joking before a farewell performance in England.

Lzzy Hale, whose band Halestorm was one of the groups chosen as a supporting act for the July 5 show, in Birmingham, England, tells PEOPLE in this week’s issue that her memories of Osborne — who died on July 22 at age 76, just two weeks after the show — will forever remind her of the power of music.

When Ozzy Osbourne passed away on July 22, many fans were surprised to learn that he was no longer living in Los Angeles. The Black Sabbath lead singer and his wife, Sharon Osbourne, relocated to England — a plan that was long in the works.

"I didn’t realize then that I would never see Ozzy again after that night," Butler writes of the July 5 "Back to the Beginning" show in England.

Several shared their personal stories, including Tom and Kellie who told the BBC how the Sabbath frontman's memory would always be kept alive at home. They named their nine-year-old son after him. "It started off as a joke really," Tom said. "We couldn't agree on a name and we just kept coming back to Ozzy.

Osbourne has tragically passed away at the age of 76—just weeks after it was revealed that he was set to quit his residence in the U.S.

Steven Tyler and Ozzy Osbourne played together just weeks ago at a farewell concert for Osbourne in Birmingham, England.