|This pivotal quartet was formed in October 1968 by Jimmy Page, John Paul Jones, Robert Plant and John Bonham. On Led Zeppelin, Page's staggering dexterity was matched by Plant's expressive, beseeching voice, a combination that flourished on Led Zeppelin II. A greater subtlety was emphasized on Led Zeppelin III, and Led Zeppelin IV included the anthemic 'Stairway To Heaven', 'Black Dog' and 'Rock 'N' Roll'. However, the effusive praise was more muted for Houses Of The Holy. A concurrent US tour helped to finance an in-concert film, issued in 1976 as The Song Remains The Same. Physical Graffiti, a double set, gave full rein to the quartet's diverse interests. Advance orders alone assured Presence platinum status. Although lacking the definition of earlier work, In Through The Out Door was a strong collection on which John Paul Jones emerged as the unifying factor. Rehearsals were then undertaken for another US tour, but in September 1980, Bonham was found dead. On 4 December, Swansong announced that the group had officially retired, although a collection of archive material, Coda, was subsequently issued. Led Zeppelin are now rightly recognized as one of the most influential bands of the rock era.