The "Ninth Symphony" refers to Ludwig van Beethoven's Symphony No. 9 in D minor, Op. 125. It is one of Beethoven's most famous and monumental compositions, often referred to as the "Choral Symphony" due to its inclusion of vocal soloists and chorus in the final movement, which sets Friedrich Schiller's "Ode to Joy" poem to music. The Ninth Symphony is celebrated for its innovative use of structure, emotional depth, and profound impact on Western classical music.
