I've heard people say this before, but I don't really see Majora's Mask having a prequel other than Ocarina of Time, unless it was a spin-off, or if there was a book explaining the races and beings that were not explained in the game.
That is exactly what Nintendo wanted us to do, Imagine. A good example of that is the backstory in the Legond of Zelda: Majora's Mask Manga.Nintendo should leave Majora and his/her/its origins to our imagination.
Shouldn't Majoras Mask Get a Prequel?