Ozzy Osbourne, following a set with his solo band, was joined by fellow Black Sabbath members to play songs like “Iron Man” ...

Jack Black teamed with the sons of Tom Morello and Scott Ian to cover Ozzy Osbourne's "Mr. Crowley" in a pre-taped video ...

Most recently, the Tenacious D frontman took part in a cover of Ozzy Osbourne's "Mr. Crowley," and his smooth vocals were so ...