What is notable about Beethoven's 9th Symphony?

Beethoven's 9th Symphony is particularly notable for its inclusion of a choral part in the final movement, which is a defining characteristic of this composition. This work, formally known as the Symphony No. 9 in D minor, Op. 125, was revolutionary for its time as it was one of the first major symphonic works to incorporate vocal soloists and a choir, setting to music Friedrich Schiller's poem "Ode to Joy." This choral finale transforms the symphonic form by integrating human voice, creating a profound statement about universal brotherhood and joy.

The integration of the chorus into a symphonic work was groundbreaking and has since influenced many composers. That Beethoven chose to include a text speaking to themes of unity and harmony in such an ambitious structure showcases the depth and innovation of his artistic vision. This element not only made the 9th Symphony a historical milestone in the symphonic repertoire but also contributed to its enduring appeal and significance in Western classical music.