The "School of Rock" alum was joined by a band of teenagers, including Tom Morello's so on guitar and Scott Ian's son on bass.

Boozers were decked with purple balloons and flags; murals were everywhere you looked; people donned Ozzy outfits, flooding the streets with battered T-shirts and denim jackets. It felt like a World Cup final for the metal fans who flooded in from every corner of the planet .

Jake E. Lee, Ronnie Wood and Nuno Bettencourt were among the six-string royalty joining the likes of Metallica, Guns N' Roses, Slayer, Tool, Pantera, Alice In Chains, Gojira for the nine-hour celebrat