TEACHING | |
| 1964 - 1966 | Music Teacher at Ewha Girls' Junior High School in Seoul |
| 1966 - 1968 | Music Theory and Composition Teacher at the Seoul Arts High School in Seoul |
| 1971 - 1978 | Lecturer at the College of Music, Seoul National University |
| 1974 - 2008 | Professor of Composition and Theory at the College of Music,
Hanyang University in Seoul 1978 - 1981, Head of the Composition Department 1989 - 1992, Dean of Woman Students of the university 1989 - 1994, Graduate Committee Member in Music 1999 - 2003, Dean of the College of Music |
| 2008 - present | Professor Emeritus, Hanyang University |
| 1981 | Visiting Professor at Koeln Musikhochschule |