Donald Young Sur (1 February 1935 – 24 May 1999) was a Korean American composer and musicologist. Although he is best known for his large-scale oratorio, Slavery Documents, most of his works were composed for small chamber ensembles. Sur was born in Honolulu and moved with his family to Los Angeles after World War II. He studied at the University of California and Princeton before spending four years in Korea researching ancient Korean court music. After receiving his doctorate from Harvard in 1972, he settled in Boston, Massachusetts, where many of his works were premiered and where he taught at several local universities, including Harvard, MIT, and Tufts. Life and career Donald Sur was born in Honolulu in 1935 to parents of Korean descent. His paternal grandfather had emigrated to Hawaii in 1903 to work in the sugarcane plantations. His mother was a Korean picture bride. The first instrument he learned to play as a child was the ukulele; the second was the mandolin, which remained his favorite instrument throughout his life and figures in several of his scores. Sur's family moved to the mainland United States in 1951 and eventually settled in Los Angeles. He studied ethnomusicology for a year at UCLA as an undergraduate before transferring to Berkeley and studying with Andrew Imbrie, Seymour Shifrin, and Colin McPhee, who taught him Balinese composition techniques. Following post-graduate work at Princeton with Roger Sessions and Earl Kim, he spent four years in Korea (1964–68) doing research on Korean court music. On his return from Korea, he continued his post-graduate studies at Harvard University where he received a PhD in composition in 1972 with The Sleepwalker's Ballad, "an accompanied recitative for soprano and chamber ensemble". After graduating from Harvard, he remained based in the Boston area for the rest of his life, combining his career as a composer with teaching at Harvard, MIT, Tufts, Wellesley and Boston University, and for a while running a small publishing company for composers of new music as well as organizing concerts of their works with John Harbison. March 1990 saw the world premiere at Symphony Hall, Boston of Sur's most famous work, Slavery Documents, an oratorio for 80 voices with a libretto by the composer. Sur's last works were Berceuse, a lullaby for violin and piano, which premiered at the Library of Congress in February 1999, and an a cappella setting of Shakespeare's Sonnet 97,