Composer in the New Music / East-West Synthesis tradition.

Korean-German composer known for integrating traditional Korean musical concepts (especially taoistic flow and East Asian aesthetics) with European avant-garde techniques. Politically controversial figure due to the 1967 Koreagate affair.

Signature works: Réak for orchestra, Cello Concerto, Sim Tjong for soprano, baritone, and orchestra, Loyang for chamber orchestra, Gasa for violin and piano.