The Symphony No. 9 in D minor, Op. 125 "Choral" is the final complete symphony of Ludwig van Beethoven. Completed in 1824, the symphony is one of the best known works of the Western classical repertoire. It is considered one of Beethoven's most highly regarded masterpieces.
The symphony was the first example of a major composer using voices in a symphony. The words are sung during the final movement by four vocal soloists and a chorus. They were taken from the "Ode to Joy", a poem written by Friedrich Schiller in 1785 and revised in 1803, with additions made by the composer.