Bayan da fashewa da su baya band Mythology a 1968, guitarist Tony Iommi da drummer Bill Ward nemi ya kafa wani nauyi blues rock band a Aston, Birmingham. Sun enlisted bassist Geezer Butler da kuma vocalist Ozzy Osbourne, wanda ya taka leda tare a cikin wani band kira Rare Breed, Osbourne ya sanya wani talla a cikin wani gida music shop: "Ozzy Needs Zig Gig <unk> yana da kansa PA". A sabon rukuni da aka farko mai suna da Polka Tulk Blues Band, sunan dauka ko dai daga wani iri talcum foda ko wani India / Pakistan tufafi shop; ainihin asalin ne m. The Polka Tulk Blues Band hada slide Jimmy Phillips, wani yaro aboki na Mythology, da kuma saxophonist Alan "Aker" Clarke. Bayan ragewa da Tulka band, da suka taka leda tare a wani rukuni da ake kira Rare Breed, da bassist Geezer Butler da kuma vocalist Ozzy Osbourne ya fara bayyana a karkashin Rare Breed, Osbourne ya sanya wani tallace-tallace tallace a wani gida music shop: "Ozzy Yana bukatar Zig Zig Gig <unk>
Agusta shekara ta 1969