Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Bayan fashewar ƙungiyarsu ta baya Mythology a cikin 1968, mai guitarist Tony Iommi da drummer Bill Ward sun nemi kafa ƙungiyar mawaƙa mai nauyi a Aston, Birmingham. Sun yi rajista da bassist Geezer Butler da mawaƙa Ozzy Osbourne, waɗanda suka yi wasa tare a cikin ƙungiyar da ake kira Rare Breed, Osbourne sun sanya talla a cikin shagon kiɗa na gida: "Ozzy Zig Yana Bukatar Gig <unk> yana da PA na kansa". An fara kiran sabon rukuni da Polka Tulk Blues Band, sunan da aka ɗauka ko dai daga wata alama ta talcum foda ko wani shagon tufafi na Indiya / Pakistan; ainihin asalin ya rikice. The Polka Tulk Blues Band ya hada da guitarist Jimmy Phillips, wani aboki na Osbourne, da kuma saxophonist Alan "Aker" Clarke. Bayan rage sunan zuwa Polka Tulk, ƙungiyar ta sake canza sunan su zuwa Duniya (wanda Osbourne ya ƙi) kuma ya ci gaba a matsayin mutum huɗu ba tare da Phillips da Clarke ba. Iommi ya damu da cewa Phillips da Clarke ba su da sadaukarwar da ta dace kuma ba sa ɗaukar ƙungiyar da gaske. Maimakon tambayar su su tafi, sai suka yanke shawara su rabu sannan kuma a hankali suka sake tsara ƙungiyar a matsayin mutum huɗu. Yayin da ƙungiyar ke yin wasa a ƙarƙashin taken Duniya, sun yi rikodin demos da yawa waɗanda Norman Haines ya rubuta kamar "The Rebel", "Song for Jim", da "Lokacin da na sauka". Demo mai suna "Song for Jim" ya kasance game da Jim Simpson. Jim Simpson ya kasance manajan ƙungiyar Bakerloo Blues Line da Tea & Symphony, tare da kasancewa mai busa ƙaho ga ƙungiyar Locomotive. Simpson kwanan nan ya fara sabon kulob mai suna Henry's Blueshouse a The Crown Hotel a Birmingham kuma ya ba da damar barin Duniya ta yi wasa a can bayan sun yarda su daina biyan kuɗin ƙungiyar tallafi na yau da kullun don musayar t-shirts kyauta. Amsar masu sauraro ta kasance mai kyau kuma Simpson ya yarda ya gudanar da Duniya. A watan Disamba na 1968, Iommi ba zato ba tsammani ya bar Duniya don shiga Jethro Tull. Kodayake aikinsa tare da ƙungiyar zai kasance na ɗan gajeren lokaci, Iommi ya bayyana tare da Jethro Tull a cikin The Rolling Stones Rock and Roll Circus TV show. Ba a gamsu da jagorancin Jethro Tull ba, Iommi ya koma...  Tambaya: Yaushe ƙungiyar ta zo da sunan Black Sabbath?
Agusta shekara ta 1969