The 1920's should be remembered as a cynical but carefree time of jazz, gin, and socioeconomic prosperity. Modern cultural norms were drastically affected during this period. Numerous technological innovations evolved, and mass production of technology plagued the United States, ultimately benefiting, and negatively affecting economic, social, and political gestures. Whereas the telephone and radio had already been invented, they became of popular use during the early 20th century, both of which were used to positively alter the entertainment industry. Phonograph technology saw rise during this period, which allowed musicians (such as jazz instrumentalists, whose study is primarily based on improvisation techniques) to produce phonograph recordings