In 1892, Antonín Dvořák took a teaching job in New York City. A celebrated Czech nationalist, he seemed the obvious choice to develop an American style—but he refused. Turning the tables, Dvořák learned American music from his students, especially from Harry Burleigh, the grandson of former slaves. Delighting in the Spiritual and other folk musics, Dvořák encouraged the development of an American sound activated by her people. And it is. Throughout the year, the San Francisco Symphony celebrates the staggering diversity of the new American sound, this week featuring three radically different works: The sizzling virtuoso Nicola Benedetti performs the Violin Concerto by jazz icon Wynton Marsalis. James Gaffigan conducts Starburst by the stylish New York composer Jessie Montgomery; and the San Francisco Symphony captures a vision of the American frontier in Dvořák’s musical postcard, the New World Symphony.