Also known for his Choral Fantasia,  for 10 points, identify this composer of such movements as "The Mystic" and "Bringer of Jollity" for his suite The Planets.
This composer's piece The Cloud Messenger was composed after, but published before, another piece that begins with a jig and ends with a dargason, St. Paul's Suite, and he based his Ode to Death on a Walt Whitman poem by the same name.  His most famous composition included a movement famous for its fade-out ending, in which the door leading to an adjoining room containing two choruses of three women was slowly closed.  Also known for his Choral Fantasia,  for 10 points, identify this composer of such movements as "The Mystic" and "Bringer of Jollity" for his suite The Planets.
This composer's piece The Cloud Messenger was composed after, but published before, another piece that begins with a jig and ends with a dargason, St. Paul's Suite, and he based his Ode to Death on a Walt Whitman poem by the same name.  
Gustavus Theodore von {Holst}