What do jazz and democracy have in common?

My mom showed me this really cool video of a trumpet player names Wynton Marsalis.

He is standing in a place called Federal Hall in New York. According the Federal Hall website, it says it's the birthplace of American Government. George Washington was sworn in as the president there and that was the home of the first Congress, Supreme Court and Executive Branch offices.

In the video he says, "Jazz music is the perfect metaphor for democracy. We improvise, which is our individual rights and freedoms; We swing, which means we are responsible to nurture the common good, with everyone in fine balance; And we play the blues, which means no matter how bad things get, we remain optimistic while still mindful of problems.”

He then plays Amazing Grace which he calls America's unofficial anthem.