<P> "The Wizard" is about a wizard who uses his magic to encourage people he encounters . In a 2005 interview with Metal Sludge, Black Sabbath bassist and lyricist Geezer Butler said the song's lyrics were influenced by the wizard Gandalf from The Lord of the Rings . It was also believed to be about the band's drug dealer at the time . </P> <Ul> <Li> Ozzy Osbourne--vocals, harmonica </Li> <Li> Tony Iommi--guitar, slide guitar </Li> <Li> Geezer Butler--bass </Li> <Li> Bill Ward--drums </Li> </Ul> <Li> Ozzy Osbourne--vocals, harmonica </Li> <Li> Tony Iommi--guitar, slide guitar </Li>

Who plays harmonica on black sabbath the wizard