This is the most gloomy and intense of Chopin's nocturnes. Haneka once said: "The middle section has Beethoven's style". Although the music is short, it is full of Chopin's talents, but it is obvious that it is his masterpiece at the peak. Kulepsky said: "Here our Chopin is completely out of the field style, and Chopin's poems are covered with a thick magic coat." The music is slow. Accompanied by a sextet, the right hand played a hazy melody with a soft voice. This melody has undergone various modulations, and the feeling of uneasiness is getting stronger and stronger. As soon as we entered the middle stage of the fast pace, the second theme of grief appeared immediately, and gradually gained strength and heat, becoming a bright world of longing.