This thesis examines Yoon-Seong Cho's critically acclaimed recording Jazz Korea, in which Cho unites Korean folk music and American jazz into a single form of expression. By reinterpreting Korean folk music through jazz, Cho stimulated interest in the Korean jazz scene and a renewed interest in Korean traditional folk songs. The goal of the thesis, the first musicological essay about Yoon-Seong Cho, is to understand how Cho's diasporic experiences affected his music by leading to a process of self-discovery that allowed Cho to interpret his own identity. Through musical analysis, the study proposes a cultural interpretation of two of Cho's pieces that have achieved popularity not only among Koreans but also internationally: "Arirang" and Han-O-Baek-Nyun.