This volume focuses on developments in the music business in the twentieth century, including vaudeville, music boxes, the relationship of Hollywood to the music business, the "fall and rise" of the record business in the 1930s, new technology (TV, FM, and the LP record) after World War II, the dominance of rock-and-roll and the huge increase in the music business during the 1950s and 1960s, and finally the changing music business scene from 1967 to the present, especially regarding government regulations, music licensing, and the record business. | American Popular Music and its Business: The First Four Hundred Years Volume III: From 1900 to 1984 by Russell Sanjek, Hardcover | Indigo Chapters