This might be really random but are there any books out there about creating sort of zodiac type codes for people to crack. An example would be how certain musicians can attach certain numbers or clues to their music that hint at release dates or other codes that lead people down some rabbit hole. Another example would be how authors like Thomas Pynchon have whole conspiracies in his books that usually just don't lead anywhere. Still, they have symbols, names, and entire histories. Just wondering if there is any sort of guide that would list some ideas etc. Should add that this is for music related purposes. Thanks.
by Any_Ear484