"Now the band is both here and not here; with us, and yet gone," the Smashing Pumpkins frontman wrote on Instagram

The metal luminary, 76, took the stage with his original bandmates at a farewell festival in his Birmingham, England, hometown on Saturday night.

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 .