Sabbath Bloody Sabbath

The greatest metal line-up of all time is heading to Birmingham as the world says its final, final, final farewell to Ozzy Osbourne as a live performer. Metallica, Slayer, Pantera, Alice In Chains, Gojira, Mastodon and the drummer from Sleep Token are all on the poster but what exactly is going on? Is it a day of Sabbath classics? Are the bands playing 25 minute sets? And why did no one invite the Iron Maiden boys to the all-star gathering of guitar heroes? And is £412 for a "golden circle"...