In 2015, I developed learning material to encourage self-expression. This material, entitled "Stage," was designed as a theater piece based on what children can do well. In my experience, I have noticed that the typical learning materials for music making are rarely based on children's own resources of expression. Rather, they are frequently based only on the "Common Items" of the government curriculum guidelines. In the process of the development of the "Stage," I have drawn on the compositional methodology of John Zorn, specifically his method of editing, in which he regards performance as material. Using the "Stage," children are encouraged to develop their creative processes.