Aaron Copland ( 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.