In Focus delivers deeper coverage of the political, cultural, and ideological issues shaping America. Published daily by senior writers and experts, these in-depth pieces go beyond the headlines to give readers the full picture. You can find our full list of In Focus pieces here.

George Gershwin once referred to jazz as American folk music, which may be the most astute characterization of America’s most unique and inimitable creation. As America celebrates its 250th birthday, it is worth looking back and appreciating the breadth of musical innovations that sprang from this great experiment in liberty and self-government.