Symphony No. 9, composed by Ludwig van Beethoven, is one of the most celebrated orchestral works in classical music. Completed in 1824, it is notable for its innovative use of a choir in the final movement, which sets Friedrich Schiller's poem "Ode to Joy" to music. This symphony is often regarded as a symbol of unity and brotherhood. The symphony is structured in four movements, with the last being the most famous. It features a large orchestra, vocal soloists, and a chorus, making it a monumental piece. Symphony No. 9 has had a profound influence on music and culture, inspiring countless adaptations and performances worldwide.