The purpose of this study develops a topic to make students feel and express about the beauty of the koto. The Koto has sensitivities of quietness and sound and spirituality required to bow in the beginning and the end of playing the koto and requires a good posture and hand movements by koto players. Considering this, the koto has not only a distinctive uniqueness, but also a fundamental attractiveness related to various kinds of music. Thus, this study hypothesized a form of learning and creation like ensemble by interacting with students in different grades, and investigated how it affected students' learning of the koto positively. Based on my hypothesis, this study conducted a survey, an analysis of students' worksheets, observations of their behaviors, and evaluations of their koto performances. Findings reveal that students are more likely to share and express their motivations of playing the koto and their feelings about music.