Symphony Edward Elgar, Gustav Mahler, Jean Sibelius, Carl Nielsen, Igor Stravinsky, Bohuslav Martinů, Roger Sessions, and Dmitri Shostakovich composed symphonies "extraordinary in scope, richness, originality, and urgency of expression" (Steinberg 1995, 404). One measure of the significance of a symphony is the degree to which it reflects conceptions of temporal form particular to the age in which it was created. Five composers from across the span of the 20th century who fulfil this measure are Sibelius, Stravinsky, Luciano Berio (in his Sinfonia, 1968–69), Elliott Carter (in his "Symphony of Three Orchestras", 1976), and Pelle Gudmundsen-Holmgreen (in "Symphony/Antiphony", 1980). Beginning in the
Symphony No. 11 (Villa-Lobos) Symphony No. 11 (Villa-Lobos) Symphony No. 11 is a composition by the Brazilian composer Heitor Villa-Lobos, written in 1955. A performance lasts about twenty-five minutes. On 29 October 1954, along with a number of other prominent composers, Villa-Lobos was commissioned jointly by the Koussevitzky Music Foundation in the Library of Congress and the Boston Symphony Orchestra for a work to celebrate that orchestra's 75th anniversary. In response, he composed his Eleventh Symphony, which was completed in 1955 . The autograph manuscript of the score, held by the Library of Congress, Washington, DC, is dedicated to Serge and Natalie Koussevitzky. The