Interesting story from The Chosun Ilbo.
5 decades of Korean girl bands
The Kim Sisters were arguably the first girl group in the history of Korean popular music. They debuted in their teens in the early 1950s, and were extremely popular among U.S. soldiers stationed in Korea. They played many instruments and danced, and enjoyed substantial success in the United States when they debuted there in 1959. After returning to Korea in 1970, they released a number of hit songs.
Hoping to emulate the Kim Sisters’ success, there were many new “sister” groups from the late 1950s.

