Led Zeppelin were an English rock band formed in London in 1968. The group consisted of guitarist Jimmy Page, singer Robert Plant, bassist and keyboardist John Paul Jones, and drummer John Bonham. The band's heavy, guitar-driven sound has led them to be cited as one of the progenitors of heavy metal. Their style drew from a wide variety of influences, including blues, psychedelia, and folk music. After changing their name from the New Yardbirds, Led Zeppelin signed a deal with Atlantic Records that afforded them considerable artistic freedom. Although the group were initially unpopular with critics, they achieved significant commercial success with albums such as Led Zeppelin (1969), Led Zeppelin II (1969), Led Zeppelin III (1970), Led Zeppelin IV (1971), Houses of the Holy (1973), Physical Graffiti (1975), Presence (1976) and In Through the Out Door (1979). Their fourth album, which features the song "Stairway to Heaven", is among the most popular and influential works in rock music, and it helped to secure the group's popularity.