<human>:  Why did the music change so much during the Jazz age?
<bot>: The music changed because it was a new era. People were doing new things, and so the music changed. In the early 20th century, the jazz age was a time of social and cultural change. Jazz was a new style of music, and people were doing new things, like dancing the Charleston, listening to ragtime, and wearing flapper dresses. Jazz was also a way to express yourself.