After several years of creative crisis, Beethoven's later works reflect the profound philosophical thinking of the master and his unremitting struggle for the ideal of "freedom, equality and fraternity" under the harsh feudal imprisonment. Its music has undergone new changes on the basis of the first two issues.

The Ninth Symphony (completed in 1823) profoundly reflects Beethoven's late thoughts. At that time, he was depressed and poor, and he had been silent in his creation for several years. He pondered over and over again in his depression, and finally, regardless of the dark reality and political situation, he resolutely wrote this magnificent work, boldly expressing his denial and criticism of the feudal restoration. He adopted a poem "Ode to Joy" which was deeply loved by the chief musician since his youth, and in order to clarify the lofty ideal symbolized by this poem, he directly adopted chorus and solo in the final movement of his work, which is a bold pioneering work in the history of music. After careful design, he gradually pushed the core idea of poetry to a climax with extremely unusual structural forms. This work is different from his previous style, more restrained and more determined. Technically, the first part of the scherzo trilogy in the second movement is developed into a complete sonata form, and the fourth movement is similar to an oratorio. It also combines the principle of piecewise music for variations, Rondo and sonata, and embodies the principle of mixed music structure. In the introduction of this movement, seven D minor notes are played at the same time, which actually indicates the emergence of modern music blocks.