Black Sabbath guitarist Tony Iommi has described viewing footage from the band’s final concert as an "emotional" experience that proved "difficult to watch" given the close bond between its members.
The 78-year-old musician, often dubbed the Godfather of Heavy Metal, co-founded the legendary rock group during the 1960s with Bill Ward, Terence "Geezer" Butler, and the late Ozzy Osbourne.
