From the Japanese colonial period to the early 1960s, most of the Korean folk songs broadcast on South Korean radio were popular folk songs. It was natural that radio, as a mass medium, favored popular folk songs that suited the public’s taste. However, in the late 1960s, radio began to pay attention to indigenous folk songs being passed down in rural areas. As the most widespread medium in South Korea during this time, radio exerted significant influence over both public and private spheres. In this regard, it is necessary to study how radio programs during this period perceived indigenous folk songs. This paper examines how the documentary series Minjok-ui Hyanggi, broadcast on the Dong-A Broadcasting System (DBS) from March 1967 to October 1968, approached indigenous folk songs and evaluated their value. The documentary series aimed to establish a national ideology and contribute to the development of national culture by exploring Korea’s traditional culture and the spirit embedded in it. Accordingly, this program examined various tangible and intangible heritages of Korea with special emphasis on folk songs. Initially, the series sought to trace the origins of popular folk songs and explore their meaning in relation to regional identity. After several unsuccessful attempts, it shifted its focus to indigenous folk songs, featuring songs from Wido, Gochang, Jeju, Haenam, Jindo, Somuuido, Andong, Goseong, and Yeongsan from July to October 1967. This program discovered a positive and resilient attitude toward life, warm-heartedness, and unique music untainted by foreign influences in the folk songs of these regions and shared their significance with listeners.