摇摆乐（swing）、咆勃爵士乐（bebop）、Sinatra、冷爵士（cooljazz）、摇滚――这些音乐都在声音和风格上更加专门化并且以年轻人为主导，它们让老一代人抓狂。
Swing , bebop , Sinatra , cool jazz , rock ' n ' roll -- all were specialized , youth-oriented upheavals in sound and style , and they drove the older generation crazy .
冷爵士