In 1924, Elliott Carter meets Charles Ives who becomes a friend, a guide and a model. In his company, he discovered the musical avant-garde: Ruggles, Varèse, Bartók, Stravinsky and the Viennese. He studied literature, mathematics, philosophy and music. He became a member of the League of Composers (until 1952) and the American Composers Alliance (until 1950), and, After World War II, of the International Society for Contemporary Music. He found the harmonious balance between teaching composition in various institutions, writing reviews and composing. His exceptional career was crowned by prestigious awards including the Ernst von Siemens Music Prize (Germany).