Про Лед Зеппелин вопрос....

Jimmy Page's symbol is generally referred to as "ZoSo", though its symbols have nonalphabetic connotations. It was designed by Page himself.[2]
The four symbols on the cover of Led Zeppelin IV, representing Jimmy Page, John Paul Jones, John Bonham, and Robert Plant (from left to right) respectively. Although the symbols are sometimes referred to as "Runes", only the middle two are runes; the other two are sigils.The source of the ZoSo symbol itself is no longer a mystery but the meaning of it still is; it originated in 'Ars Magica Arteficii' (1557) by Gerolamo Cardano (also known as J. Cardan), an old alchemical grimoire, where it has been identified as a sigil consisting of zodiac signs. The sigil is reproduced in "Dictionary of Occult, Hermetic and Alchemical Sigils" by Fred Gettings, published in 1982 by Routledge & Kegan Paul (see here). The symbol used to represent the planet Saturn for purposes of magic. Page is a Capricorn, a sign ruled by Saturn, and the Z-like symbol is distinctive as a common astrological mark for Saturn. The oSo portion is similar to the alchemic symbol for mercury, also associated with Saturn. In cabalistic or hermetic study, knowledge seekers look to the god Mercury (Hermes, see Hermes Trismegistus and the Hermetica) for guidance and light, more or less the scene that unfolds in the drawing on the inside cover of the album and later acted out by Page in the concert film The Song Remains the Same. This part of the symbol is also strikingly similar to the Lucifer script ciphered by Aleister Crowley in his book The Equinox; and the symbol as a whole strongly resembles characters of the "alphabet of the Magi", a seventeenth century text used for fashioning magical talismans. What it means personally to Page is unknown, as he has never publicly revealed its meaning. His interest in Aleister Crowley, however, is widely known. The guitarist owns many of Crowley's original manuscripts and other effects, including (until the mid-1980s) Crowley's former home on Loch Ness, Boleskine House. In the 1970s Page owned the occult bookshop The Equinox in London, also an enterprise for publishing rare manuscripts.
John Paul Jones' symbol is a single circle intersecting 3 vesica pisces (a triquetra). Taken from a book of runes, it symbolises a person with confidence and competence.[2]
John Bonham's symbol, the three interlocking rings, represents the trinity of mother, father and child. It could also depict an aerial view of a drum kit. It does in fact represent the pagan idea of trilogies and trios, and, more commonly, is a Christian symbol for the Trinity. In the 1990 Bonham tribute radio special, "It's Been A Long Time", son Jason Bonham stated that the symbol was chosen as a representation of man, woman, and child. Jones's and Bonham's symbols fitting together -- one to the other inside out, inverse images -- is no accident. In jazz music which inspired Led Zeppelin, the bassist and drummer form interlocking parts of a rhythm section. In reality the symbol originally appeared as the emblem of Ballantine beer, which happened to be Bonzo's favorite so when choosing symbols he decided to borrow this one.[2]
The symbol for Robert Plant is the feather of the Egyptian goddess Ma'at, representing truth, justice, fairness and writing, encapsulated by an unbroken circle representing life. According to Egyptian mythology, Anubis, the god of judgment and death, would take the heart of those who died and put it on a balance with the feather of Ma'at. If the heart outweighed the feather, the person's soul would go to hell, but on the other hand, if the heart was lighter than the feather, the soul would go to heaven.[2]
There is also a fifth, smaller symbol chosen by guest vocalist Sandy Denny representing her contribution to "The Battle of Evermore"

Честно? сам долго интересовался....почему и что значат эти символы. так и не выяснил. Жаль( а группа просто божественна. одна из моих самых любимых....