Jazz is about making something familiar--a familiar song--into something fresh.
Jazz musicians place a high value on finding their own sound and style, and that means, for example, that trumpeter Miles Davis sounds very different than trumpeter Louis Armstrong (whose sound you can hear in Louis's Music Class.) Jazz musicians like to play their songs in their own distinct styles, and so you might listen to a dozen different jazz recordings of the same song, but each will sound different. The musicians' playing styles make each version different, and so do the improvised solos. Jazz is about making something familiar--a familiar song--into something fresh. And about making something shared--a tune that everyone knows--into somethingpersonal. Those are just some of the reasons that jazz is a great art form, and why some people consider it "America's classical music."