Sometimes it's easy to assume that all famous people know each other. But until Saturday's (July 5) Back to the Beginning blow-out final show honoring Ozzy Osbourne and Black Sabbath, the Prince of Darkness had never met Guns N' Roses singer Axl Ros e. Despite both men being hard rock royalty, their paths had somehow never crossed.

On July 5, Ozzy performed his final concert — titled “Back to the Beginning” — with his band Black Sabbath. It was the first time the singer had reunited with the group in 20 years.

Performing with Tom Morello’s All Stars supergroup, Draiman, 52, was part of a rock-filled lineup at the Back To The Beginning concert at Villa Park in Birmingham on Saturday, July 5. The celebration was an all-day event that also featured sets by a host of major metal bands, including Metallica, Slayer, and Alice in Chains.