Symphony No. 9 "Chorus" in D minor was composed approximately between 1819 and 1824. It is the pinnacle and summary of Beethoven's entire music creation career. The work premiered in Vienna on May 7, 1824, and was a huge success, receiving thunderous applause as many as five times. This symphony has a broad conception, profound thoughts, and rich and diverse images. It expanded the scale and scope of the symphony, beyond the genres and norms of the time, and turned it into a magnificent and full-featured work performed by a symphony orchestra, chorus, soloists, and duets. A magnificent ode to philosophy and heroism. Through this work, the author expresses the will of mankind to fight for freedom, and firmly believes that this struggle will eventually end with the victory of mankind, and mankind will surely gain joy, unity and friendship. The chorus of the fourth movement of this work is composed with the lyrics of the famous German poet Schiller's "Ode to Joy", which is also the most famous theme in this work. From the inception to the completion of the work, the Ninth Symphony took Beethoven decades of hard work and was the pinnacle of his musical career. The whole song takes at least an hour to perform from beginning to end, but it doesn’t feel lengthy or procrastinating