The children s song that elementary children enjoy singing is highly recommended to foster their desired emotional development. It is because the children s song has aesthetic emotions as combination of art of poetry and music. The aesthetic emotions and aesthetic expressions of children s song are enough to cultivate children s emotion. For raising the desirable emotional development of elementary children, this study proposes the practices of aesthetic emotions in children s song as the practice of divergent emotion and the practice of convergent. By practicing of the aesthetic emotions in children s song, elementary children are expected not only to cultivate their emotions but also to have an eye for beauty to discover aesthetic objects and beauty in their daily lives.