On the spot, play of music falls into a crisis that how to guide kindergardener's children. Education unconcerned with children's pleasure are spreding in music guidances. Kindergarden teachers show off techinical skill to her children, and parent anticipate only children's concert. Children are desirous of music play, hence their dislike of music directions. Therefore, this treatise considers children's music environment that challenge children's play of musical instruments. We prepared cassette-deck-player that children are able to use, colour notations that correspond to keyboards, for kindergardener's children. As the result, children learned how to discover to enjoy music. We believe firmly get back music play forchildren. In conclusion, this treatise is the first attempt between educational department and kindergarden affiliated to YAMAGUCHI UNIVERSITY.