Korean a cappella has an important place in popular music, and it is expanding its range of use, especially in cultural arts education, with various musical approaches and utilities. However, in order for this music coming from foreign countries to take its place in Korea, it is necessary to mass-produce works based on Korean musical mother tongue, which is pentatonic scale, and a method to teach it based on it has been developed, so that many people can easily teaching and easily performance. For this purpose, this study searched and examined the origin and the usefulness of a cappella in western music history and found a cappella adapted to each age through various process of change from the modern era to the modern era, Find out the path. In order to find out how to apply the pentatonic scale analysis of Korean music and the possibility of application of polypony a cappella, I searched for the application and practicality of Korean pentatonic scale and applied it as art education method. The purpose is to present the a way for Korea's a cappella to move forward.