Led Zeppelin were a group.
Houses of the Holy is the fifth studio album by the English rock band Led Zeppelin , released on 28 March 1973 by Atlantic Records . Led Zeppelin were an English rock band formed in London in 1968 . Rolling Stone magazine described them as `` the heaviest band of all time '' , `` the biggest band of the Seventies '' , and `` unquestionably one of the most enduring bands in rock history '' . `` Stairway to Heaven '' is a song by the English rock band Led Zeppelin , released in late 1971 .