Krzysztof Eugeniusz Penderecki was a Polish composer and conductor. His best-known works include Threnody to the Victims of Hiroshima, Symphony No. 3, his St Luke Passion, Polish Requiem, Anaklasis and Utrenja. His oeuvre includes five operas, eight symphonies and other orchestral pieces, a variety of instrumental concertos, choral settings of mainly religious texts, as well as chamber and instrumental works.
After graduating from the Academy of Music in Krakow, he became a teacher there and began his career as a composer in 1959 during the Warsaw Autumn festival. His Threnody to the Victims of Hiroshima for string orchestra and the choral work St. Luke Passion have received popular acclaim. His first opera, The Devils of Loudun, was never successful despite repeated revisions. In the mid-1970s, Penderecki became a professor at the Yale School of Music. From the mid-1970s his composition style changed, with his first violin concerto focusing on the semitone and the tritone.