Aaron Copland (/ˈkoʊplənd/ KOHP-lənd; November 14, 1900 – December 2, 1990) was an American composer, critic, writer, teacher, pianist, and conductor of his own and other American music. Copland was referred to by his peers and critics as the "Dean of American Music". The open, slowly changing harmonies in much of his music are typical of what many consider the sound of American music, evoking the vast American landscape and pioneer spirit. He is best known for the works he wrote in the 1930s and 1940s in a deliberately accessible style often referred to as "populist" and which he called his "vernacular" style. Works in this vein include the ballets Appalachian Spring, Billy the Kid and Rodeo, his Fanfare for the Common Man and Third Symphony. In addition to his ballets and orchestral works, he produced music in many other genres, including chamber music, vocal works, opera, and film scores.
After some initial studies with composer Rubin Goldmark, Copland traveled to Paris, where he first studied with Isidor Philipp and Paul Vidal, then with noted pedagogue Nadia Boulanger. He studied three years with Boulanger, whose eclectic approach to music inspired his own broad taste. Determined upon his return to the U.S. to make his way as a full-time composer, Copland gave lecture-recitals, wrote works on commission and did some teaching and writing. But he found that composing orchestral music in a modernist style, which he had adopted while studying abroad, was unprofitable, particularly in light of the Great Depression. He shifted in the mid-1930s to a more accessible musical style that mirrored the German idea of Gebrauchsmusik ("music for use"), music that could serve utilitarian and artistic purposes. During the Depression years, he traveled extensively to Europe, Africa, and Mexico, formed an important friendship with Mexican composer Carlos Chávez, and began composing his signature works.