Featuring a mocking anti-religious lyric from lapsed Catholic Geezer, the romping After Forever is one of the most musically sophisticated songs in Sabbath’s early canon, and is a result of the quartet feeling the pressure to follow-up the No.1 success of Paranoid with a more ambitious sound.

The metal luminary, 76, took the stage with his original bandmates at a farewell festival in his Birmingham, England, hometown on Saturday night.

Back to the Beginning' was the gig to end all heavy metal gigs as Ozzy Osbourne and Black Sabbath bade farewell at Villa Park. Band roadie Graham Wright describes all the work that went into their final show.