Explore the dynamic evolution of American music from the Roaring Twenties through the postwar 1950s. Life in the 1920s saw technology grow, America booming, money flowing, and music in many styles sounding modern in the concert hall, on stage, on the radio and recordings, and in clubs throughout the country.  During the 1930s and The Great Depression, music and the arts remained a popular part of life as big band swing music dominated, folk music reflected the moods of the country, concert music took on a popular tone, films added sound and music, and musicians became celebrities.  World War II dominated the 1940s and the music world changed and developed into forms and styles that have been familiar ever since on stage, in the concert hall, in the clubs, and in homes.  As radio had spread the music before the war, television became the norm after.  Artists who are still popular from the period include Louis Armstrong, Glenn Miller, Frank Sinatra, Duke Ellington, Aaron Copland, Leonard Bernstein, Bing Crosby, Rodgers & Hart & Hammerstein, George Gershwin, Jimmie Rodgers, Woodie Guthrie, Gene Autry, Dizzy Gillespie, Paul Robeson, and Benny Goodman.