Black Sabbath's 'Greatest Hits' is a 14 track collection of classic tracks from across the band's first eight albums,  including tracks from 1970's debut through 1978's 'Never Say Die'.  The album brings some of the best loved and most influential rock songs of all time together on one album, including such classics as 'Paranoid', 'Iron Man', 'Sabbath Bloody Sabbath', 'War Pigs' and 'Changes'. 'Greatest Hits' is a must have for any self respecting music fan from the band that invented Metal.