Aaron Copland (/ˈkoʊplənd/, KOHP-lənd; November 14, 1900 – December 2, 1990) was an American composer, composition teacher, writer, and later a conductor of his own and other American music. Copland was referred to by his peers and critics as “the Dean of American Composers”. The open, slowly changing harmonies in much of his music are typical of what many people consider to be 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 the composer labeled 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. However, he found that composing orchestral music in the modernist style, which he had adopted while studying abroad, was a financially-contradictory approach, particularly in light of the Great Depression. He shifted in the mid-1930s to a more accessible musical style which 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.

During the late 1940s, Copland became aware that Stravinsky and other fellow composers had begun to study Arnold Schoenberg‘s use of twelve-tone (serial) techniques. After he had been exposed to the works of French composer Pierre Boulez, he incorporated serial techniques into his Piano Quartet (1950), Piano Fantasy (1957), Connotations for orchestra (1961) and Inscape for orchestra (1967). Unlike Schoenberg, Copland used his tone rows in much the same fashion as his tonal material—as sources for melodies and harmonies, rather than as complete statements in their own right, except for crucial events from a structural point of view. From the 1960s onward, Copland’s activities turned more from composing to conducting. He became a frequent guest conductor of orchestras in the U.S. and the UK and made a series of recordings of his music, primarily for Columbia Records.

https://en.m.wikipedia.org/wiki/Aaron_Copland

Leoš Janáček (Czech pronunciation: [ˈlɛoʃ ˈjanaːtʃɛk] listen), baptised Leo Eugen Janáček; 3 July 1854 – 12 August 1928) was a Czech composer, musical theorist, folklorist, publicist and teacher. He was inspired by Moravian and other Slavic folk music to create an original, modern musical style.

Until 1895 he devoted himself mainly to folkloristic research. While his early musical output was influenced by contemporaries such as Antonín Dvořák, his later, mature works incorporate his earlier studies of national folk music in a modern, highly original synthesis, first evident in the opera Jenůfa, which was premiered in 1904 in Brno. The success of Jenůfa (often called the “Moravian national opera”) at Prague in 1916 gave Janáček access to the world’s great opera stages. Janáček’s later works are his most celebrated. They include operas such as Káťa Kabanová and The Cunning Little Vixen, the Sinfonietta, the Glagolitic Mass, the rhapsody Taras Bulba, two string quartets, and other chamber works. Along with Antonín Dvořák and Bedřich Smetana, he is considered one of the most important Czech composers.

https://en.m.wikipedia.org/wiki/Leo%C5%A1_Jan%C3%A1%C4%8Dek

https://en.wikipedia.org/wiki/Ivan_Lins

Roberta Cleopatra Flack (born February 10, 1937) is an American singer. She is known for her No. 1 singles “The First Time Ever I Saw Your Face“, “Killing Me Softly with His Song“, “Feel Like Makin’ Love“; and “Where Is the Love” and “The Closer I Get to You“, two of her many duets with Donny Hathaway.

Flack is the only solo artist to win the Grammy Award for Record of the Year on two consecutive years: “The First Time Ever I Saw Your Face” won at the 1973 Grammys and “Killing Me Softly with His Song” won at the 1974 Grammys.

https://en.wikipedia.org/wiki/Roberta_Flack