Antonín Dvořák came to the United States in the 1890s to become director of New York’s National Conservatory of Music. While in our country, Dvořák produced some marvelous scores, including his “New World” Symphony, the Cello Concerto, and the “American” String Quartet. Earlier, we heard a movement from another piece that Dvořák wrote during his U.S. sojourn. What is its title?