<P> Page has also stated that the decision to release the album without any written information on the album sleeve was contrary to strong advice given to him by a press agent, who said that after a year's absence from both records and touring, the move would be akin to "professional suicide". Page thought, "We just happened to have a lot of faith in what we were doing ." He recalled the record company were insisting that a title had to be on the album, but held his ground, as he felt it would be an answer to critics who could not review one Led Zeppelin album without point of reference to earlier ones . </P> <P> Releasing the album without an official title has made it difficult to consistently identify . While most commonly called Led Zeppelin IV, Atlantic Records catalogues have used the names Four Symbols and The Fourth Album . It has also been referred to as ZoSo (which Page's symbol appears to spell), Untitled and Runes . Page frequently refers to the album in interviews as "the fourth album" and "Led Zeppelin IV", and Plant thinks of it as "the fourth album, that's it". The original LP also has no text on the front or back cover, and lacks a catalogue number on the spine . </P> <P> In place of a title, Page decided each member could choose a personal emblem for the cover . Initially thinking of a single symbol, he then decided there could be four, with each member of the band choosing their own . He designed his own symbol and has never publicly disclosed any reasoning behind it . It has been argued that his symbol appeared as early as 1557 to represent Saturn . The symbol is sometimes referred to as "ZoSo", though Page has explained that it was not in fact intended to be a word at all . Jones' symbol, which he chose from Rudolf Koch's Book of Signs, is a single circle intersecting three vesica pisces (a triquetra). It is intended to symbolise a person who possesses both confidence and competence . Bonham's symbol, the three interlocking (Borromean) rings, was picked by the drummer from the same book . It represents the triad of mother, father and child, but, inverted, it also happens to be the logo for Ballantine beer . Plant's symbol of a feather within a circle was his own design, being based on the sign of the supposed Mu civilisation . A fifth, smaller symbol chosen by guest vocalist Sandy Denny represents her contribution to "The Battle of Evermore"; the figure, composed of three equilateral triangles, appears on the inner sleeve of the LP, serving as an asterisk . </P> <P> During Led Zeppelin's tour of the United Kingdom in winter 1971 shortly after the album's release, the symbols could be seen on the group's stage equipment; Page's on one of his amplifiers, Bonham's on his bass drum head, Jones' on a covering for his Rhodes piano, and Plant's on the side of a PA cabinet . Only Page's and Bonham's symbols were retained for subsequent tours . </P>

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