성금연 (Sung, Keum Yun)
Sung, Keum Yun (1923-1986) was an intangible asset of the kayagŭm, as designated by the South Korean government, and an ambassador of traditional Korean music, called gugak (국악), to other nations. There is much information about her on the web in Korean, but not in English. I may read through some of those and put details up here, in English, in the future.