Led Zeppelin were an English rock band formed in 1968 by Jimmy Page (guitar), Robert Plant (vocals, harmonica), John Paul Jones (bass guitar, keyboards, mandolin), and John Bonham (drums). With their heavy, guitar-driven sound, Led Zeppelin are regularly cited as the progenitors of both hard rock and heavy metal.Neal Preston/ Retna, " Led Zeppelin (British Rock Group)", Encyclopædia BritannicaChad Bowar, " Heavy metal timeline", About.com Heavy Metal. BBC.com A Headbanger's Journey. Warner Home