This composer argued that imagination is the defining trait of a “gifted listener” in the first of the Norton Lectures he published as Music (-5[1])and Imagination. This composer used a 10-tone row, reserving the other two pitches for cadences, in a half-hour long, one-movement Piano (-5[1])Fantasy. This composer distinguished “expressive,” “sensuous,” and “sheerly musical” planes of experience in What to Listen For in Music. A visit to a “popular type dance hall” with his friend Carlos Chavez inspired an orchestral work by this composer that quotes folk songs like “El Palo Verde,” titled (10[1])El (10[1])Salón México. (10[1])A piece that this composer (10[1])originally titled “Ballet for Martha” concludes with the Shaker hymn “Simple Gifts.” (10[1]-5[1])For 10 points, (10[1])name this populist American composer of Appalachian Spring. ■END■ (10[3])