Violinist Kyung Sun Lee captured sixth prize in the 1994 Tchaikowsky Competition, first prizes of the Washington and D'Angelo International Competitions and third prize in the Montreal International Competition, where she also won the Audience Favorite and the Best Performance of the Commissioned Work prizes. Subsequent to winning these awards she has enjoyed ever-increasing popularity as a performer.

For years a highly sought after teacher in Seoul, Kyung Sun Lee became Assistant Professor of Violin at the Oberlin Conservatory in the fall of 2001, and then Associate Professor of Violin at University of Houston (Moores School of Music) in the fall of 2006. She has taught at the Aspen Music Festival, and has also been involved with the Seattle and Green Mountain Chamber Music Festivals, the Euroart Chamber Music Festival in Leipzig, as well as numerous festivals in Korea. She is a former member of the acclaimed KumHo/Asiana String Quartet of Korea, with whom she performed worldwide. In addition to her busy international performing career, in recent years she has been in some demand as a judge of violin competitions.

Kyung Sun Lee has recorded two CDs with pianist/husband Brian Suits, "Salut d'Amour" with pianist HaeSun Paik on EMI, several recordings with KumHo/Asiana String Quartet, and "Spanish Heart" with German pianist Peter Schindler and guitarist Sung-Ho Chang on Good International. An album with cellist Tilmann Wick was released in 2004 on Audite Records. Kyung Sun Lee studied at Seoul National University, Peabody Conservatory and The Juilliard School. Her teachers have included Nam Yun Kim, Sylvia Rosenberg, Robert Mann, Dorothy Delay and Hyo Kang.