Biotilejepe wọn enlisted bassist Geezer Butler ati olorin Ozzy Osbourne, ti o ti dun papọ ni ẹgbẹ kan ti a npe ni Rare Breed, Osbourne ti gbe ipolowo kan ni ile itaja orin agbegbe kan: "Ozzy Needs Zig Gig <unk> has own PA". A ti kọkọ pe ẹgbẹ tuntun ni Polka Tulk Blues Band, orukọ ti a gba boya lati ami iyasọtọ talcum lulú tabi ile itaja aṣọ India / Pakistan kan; ipilẹṣẹ gangan jẹ rudurudu. The Polka Tulk Blues Band pẹlu Jimmy Phillips, ọrẹ igba ewe ti Mythology, ati saxophonist Alan "Aker" Clarke.
Ẹgbẹ́ akọrin Black Sabbath