Who were the music composers in the 1920s and 1930s?

In the 1920s and 1930s, notable music composers included George Gershwin, known for his synthesis of classical and jazz elements, and Aaron Copland, who brought American themes into Classical Music. Other significant figures were Duke Ellington and Benny Goodman in jazz, and film composers like Max Steiner, who shaped the sound of Hollywood's golden age. These composers played a crucial role in defining the musical landscape of their time, influencing both popular and classical music.