The American Composers Orchestra premieres music by hundreds of today’s top composers, and no two concerts are alike. In this program, they offer a wide-ranging musical testament to humanity’s bold endeavors. Works include a multimedia rendering of a famed (and ultimately doomed) expedition to the North Pole, written by Nina C. Young; a world premiere by composer and jazz pianist Guillermo Klein; a world premiere by George Lewis, one of the leading exponents of experimental music today; an Augusta Read Thomas composition originally written to precede Beethoven’s Sixth Symphony; and a world premiere by Jack Hughes.