Bev Bevan explores the origins of heavy metal music and Black Sabbath's homecoming gig, with interviews and music from Black Sabbath, Judas Priest and Slipknot. As the music stops, fireworks go off above Villa Park as the founders of heavy metal bow out of their unbelievable career.

Ozzy Osbourne has bid farewell to his fans for one final time as he joined Black Sabbath and huge rock icons Metallica, Guns N' Roses and Slayer for his last show ever in Birmingham

The "Back to the Beginning" send-off in Birmingham, England, was a fitting finale for the heavy metal band that changed everything.