His Ninth Symphony is called the "Choral" Symphony because there is a choir and soloists in the last movement. At the time people did not understand this either, because a symphony is normally a work for orchestra, not a work with singers. Beethoven chose the words of a poem by the German poet Friedrich Schiller: "An die Freude" ("Ode to Joy"). It is all about living together in peace and harmony, so that it sends an important message to people. This is why it has been chosen in recent years as the National Anthem for the European Union. The Ninth Symphony was performed at a concert on May 7, 1824. After the scherzo movement the audience applauded enthusiastically, but Beethoven could not hear the applause and one of the singers had to turn him round so that he could see that people were clapping.