Nadia Boulanger in the context of "Conservatoire de Paris"

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.

George Gershwin (/ˈɡɜːrʃ.wɪn/; born Jacob Gershwine; September 26, 1898 – July 11, 1937) was an American composer and pianist whose compositions spanned jazz, popular and classical music. Among his best-known works are the songs "Swanee" (1919) and "Fascinating Rhythm" (1924), the orchestral compositions Rhapsody in Blue (1924) and An American in Paris (1928), the jazz standards "Embraceable You" (1928) and "I Got Rhythm" (1930) and the opera Porgy and Bess (1935), which included the hit "Summertime". His Of Thee I Sing (1931) was the first musical to win the Pulitzer Prize for Drama.

Gershwin studied piano under Charles Hambitzer and composition with Rubin Goldmark, Henry Cowell, and Joseph Brody. He began his career as a song plugger but soon started composing Broadway theater works with his brother Ira Gershwin and with Buddy DeSylva. He moved to Paris, intending to study with Nadia Boulanger, but she refused him, afraid that rigorous classical study would ruin his jazz-influenced style; Maurice Ravel voiced similar objections when Gershwin inquired about studying with him. He subsequently composed An American in Paris, returned to New York City and wrote Porgy and Bess with Ira and DuBose Heyward. Initially a commercial failure, it came to be considered one of the most important American operas of the 20th century and an American cultural classic.

Elliott Cook Carter Jr. (December 11, 1908 – November 5, 2012) was an American modernist composer who was one of the most respected composers of the second half of the 20th century. He combined elements of European modernism and American "ultra-modernism" into a distinctive style with a personal harmonic and rhythmic language, after an early neoclassical phase. His compositions are performed throughout the world, and include orchestral, chamber music, solo instrumental, and vocal works. Carter was the recipient of many awards – he was twice awarded the Pulitzer Prize for his string quartets. He also wrote the large-scale orchestral triptych Symphonia: sum fluxae pretium spei.

Carter was born in New York City. He developed an interest in modern music in the 1920s. He was later introduced to Charles Ives, and he soon came to appreciate the American ultra-modernists. After studying at Harvard University with Edward Burlingame Hill, Gustav Holst and Walter Piston, he studied with Nadia Boulanger in Paris in the 1930s, then returned to the United States. Carter was productive in his later years, publishing more than 40 works between the ages of 90 and 100, and over 20 more after he turned 100 in 2008. He completed his last work, Epigrams for piano trio, on August 13, 2012.