"Arirang" (아리랑; [a.ɾi.ɾaŋ]) is a Korean folk song, often considered as the unofficial national anthem of Korea.
Composed by Cool-Jae Huh, one of South Korea's most prolific and innovative composers. He is especially known for his use of Korean folk songs in Western musical settings. The musical idioms of each type of folk song vary considerably and elements of Korean folk music, such as modes, rhythmic patterns, and unique ornamentations, which appear in this piece. Arirang, the title of the Mass, is the most famous and celebrated folk song in the history of Korea. It has served as the basis for pieces in almost all musical genres.