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Black Sabbath were an English rock band, formed in Aston, Birmingham in 1969 by Ozzy Osbourne (lead vocals), Tony Iommi (guitar), Geezer Butler (bass guitar), and Bill Ward (drums).

Led Zeppelin were an English rock band that formed in 1968 and consisted of guitarist Jimmy Page, singer Robert Plant, bassist John Paul Jones, and drummer John Bonham.

Deep Purple are an English rock band formed in Hertford in 1968.[1] Along with Led Zeppelin and Black Sabbath, they are considered to be among the pioneers of heavy metal and modern hard rock,