 Kitsis and Hororwitz spoke about the nature of the episode saying, "It actually is a huge part of the mythology of the show and there are some big things that happen in the episode, frankly, it's been one of the challenges of doing the musical because we never wanted to do something where it was just like a to-the-side, one-off thing, and then get back to the main story.We want to see it part of the main story, which meant we had to really plan out this season with some great detail.