It originally called         for such instruments as a (*) siren, three xylophones, and sixteen player pianos.
According to Wikipedia, this composition's patroness was "tossed in a blanket by three baronesses and a duke" at the end of its premiere. In 2005, the National Gallery commissioned the League of Electronic Musical Urban Robots, or LEMUR, to play this piece with a robotic orchestra. All the instruments except a single bell stop playing to introduce this piece's coda, which contains lengthy periods of complete silence. It originally called         for such instruments as a (*) siren, three xylophones, and sixteen player pianos. At early performances of this piece, musicians inserted objects into electric fans to imitate airplane propellers. For 10 points, name this George Antheil ["AN-tile"] composition which was written to soundtrack an avant-garde film directed by Fernand Léger and Dudley Murphy.
According to Wikipedia, this composition's patroness was "tossed in a blanket by three baronesses and a duke" at the end of its premiere.
Ballet Mécanique