User blog comment:MOTT (Master of the Theater)/Possibly Canon Songs/@comment-6192846-20130324222441

Blood-Stained Switch is confirmed canon via mothy's comments but is going through a transitional phase on the wiki since all the details and context around it is hard to determine. For instance, we know that the Deadly Sins of Evil: The Lunacy of Duke Venomania novel elaborates on a lot of the concepts and facts revealed by mothy and Blood-Stained Switch but we only have so many scant details about it.

As for the others, U-Topos is not considered "non-canon" so much as it is considered "not real" since it is Gammon's dream of the Master of the Court's "utopia" and is a prophesy with less than a 50% chance of being correct.

Desert Bluebird is so cast off from the known events and ideas of the Evillious Chronicles that it is considered non-canon until we have any reinforcing evidence that it is canon and/or details that give us context to how it relates to the Evillious Chronicles.