The White Songbook was a fantasy theme. Looking back at it now, it was actually a little Alice in Wonderland'esqe in that it was kind of a complex and at times confusing parody. Sorry I can't be more specific.
The Ministry of Archers was dealing with the ideas of strength, evil and the devil. To me, it was about being firm in your beliefs and moving forward in life rather than living in the past and letting others dictate their societal code upon you.