In late 1967, Geezer Butler formed his first band, Rare Breed, and soon recruited Osbourne to serve as vocalist. The band played two shows, then broke up. Osbourne and Butler reunited in Polka Tulk Blues, along with guitarist Tony Iommi and drummer Bill Ward, whose band Mythology had recently broken up. They renamed themselves Earth, but after being accidentally booked for a show instead of a different band with the same name, they decided to change their name again. They finally settled on the name Black Sabbath in August 1969, based on the film of the same title. The band had noticed how people enjoyed being frightened; inspired, the band decided to play a heavy blues style of music laced with gloomy sounds and lyrics. While recording their first album, Butler read an occult book and woke up seeing a dark figure at the end of his bed. Butler told Osbourne about it and together they wrote the lyrics to "Black Sabbath", their first song in a darker vein.