It sometimes seems as though this new technology is the major change in the popular-music scene. People may therefore assume that the continuing decline in CD sales represents merely a shift to music downloads. In fact, the decline is greater than that explanation would allow. People are buying less music today than in previous years. While the effects of downloading are often discussed, it's not just the music-delivery system that has changed. What we have long considered to be mass culture has increasingly become a collection of niche cultures.