After Tony Iommi left his momentary gig with Jethro Tull, he brought the work ethic he'd seen in Tull back to the band that would become Black Sabbath. "Wicked World" was one of the first songs that the band wrote as a result of their renewed work ethic.
Ricky from Killie, United KingdomThis was the first song recorded by the band for their debut album and the only song where Tony Iommi used a Fender Stratocaster. The Strat was his main guitar but the pick up failed after the recording of this track. He used his back up guitar (a Gibson SG) for the rest of the album and never changed back afterwards.
The track was included on the US version of the album but was originally only a b-side to Evil Woman in the UK and Europe till the 1996 remastered CD added it to the album proper.