Critic Robert Goldblum writes:
"Aaron Copland grew up in the cramped quarters of Brooklyn, the child of Lithuanian Jewish immigrants, but in his music he lit out for the territory. The architecture of city life — Deco skyscrapers and imposing Beaux-Arts museums — defined his early life, but in his music he sought sanctuary in the prairie."
According to a PBS story: "As a spokesman for the advancement of indigenous American music, Copland made great strides in liberating it from European influence."
Understanding how Copland transformed himself is mysterious.