Sim Min-kyung(born September 11, 1955) is South Korean singer known professionally as Sim Soo-bong. When she was a senior at Myongji University, she debuted in 1978 through MBC College Song Contest (Korean: MBC 대학가요제) at which she performed her self-composed song "Geuddae Geu Saram" (그때 그사람). 　　She met trot singer Nah Hoon-ah in 1975 who was a top singer at that time. Nah was impressed by her singing and introduced to Sinsegi Records but her album was not able to come out to the market because the record company did not think that it would be successful. 　　In 1976, Sim applied to Sookmyung Women's University as a composition major but was rejected. In the following year, she was admitted to Myongji University with a major of Business Administration. 　　In 1978, when she was 23, she appeared with her own song she wrote in MBC College Song Contest, and immediately she got media attention. That year, she made a huge success with her first record which was a new-style trot music.