This man's full orchestrated score to his most-performed ballet was recorded in 1999 under the interpretation of Michael Tilson Thomas, a renowned conductor of the works of this man, whose piano sonata was adapted into Doris Humphrey's dance "Day on Earth." He scored a work for brass and percussion intended to foster patriotism during World War II. He wrote a ballet depicting a Pennsylvanian farmer celebration that quotes the Shaker hymn "Simple 
This man's full orchestrated score to his most-performed ballet was recorded in 1999 under the interpretation of Michael Tilson Thomas, a renowned conductor of the works of this man, whose piano sonata was adapted into Doris Humphrey's dance "Day on Earth." He scored a work for brass and percussion intended to foster patriotism during World War II. He wrote a ballet depicting a Pennsylvanian farmer celebration that quotes the Shaker hymn "Simple Gifts." For 10 points, name this American composer of Fanfare for the Common Man and Appalachian Spring.
This man's full orchestrated score to his most-performed ballet was recorded in 1999 under the interpretation of Michael Tilson Thomas, a renowned conductor of the works of this man, whose piano sonata was adapted into Doris Humphrey's dance "Day on Earth."
Aaron Copland