arranged by [choir] Wil Malone art direction Cream consultant Steve Hammonds coordinator Mark Forster cover, design concept, engineer [assistant] Graham Wright design [reissue], consultant Hugh Gilmour engineer Robin Black engineer [assistant] Les Martin engineer [assistant] Monty Babson engineer [assistant] Spock Wall performer The English Chamber Choir performer [all guitar, piano, synthesizer, harp, organ] Tony Iommi performer [bass] Geezer Butler performer [drums, percussion, piano] Bill Ward performer [vocals] Ozzy Osbourne producer, engineer Mike Butcher product manager Jon Richards remastered by Andy Pearce remastered by [assistant] Matt Wortham sleeve notes Jerry Ewing tape op, other [saboteur] Dave Harris written-by, arranged by, producer, instrumentation by Black Sabbath Phonographic Copyright (p) Sanctuary Records Ltd. Copyright (c) Sanctuary Records Group Ltd. (2) Record Company Universal Music Group International (2) Manufactured By Universal Music Group International B.V. Distributed By Universal Music Group International B.V. Original album released by NEMS Records, September 1975 9119 001.