Many musical performers want to show off their performances for self-expression and communication with other people. Therefore, musicians perform in not only in fixed places such as concert halls and live halls, but also anywhere, such as a street and a park. Conventional representations need stationary equipment. Therefore, the goal of our study is to construct “Wearable Piano” with a focus of attention on fashion and the use of LED. Moreover, we also discuss the possibility of a new entertainment system and performance style.