Isang Yun (윤이상, born September 17, 1917 in Chungmu [now Tongyeong, South Korea; died November 3, 1995 in Berlin) was a Korean-German composer. Yun's primary musical concern was the development of Korean music through Western musical means. After experimenting with 12-tone techniques during his studies at Darmstadt, Yun developed his own musical personality in his works of the early 1960s. Yun's music employed techniques associated with traditional Korean music, such as glissandi, pizzicati and vibrati.