The theme of the whole song is divided into three parts, each with the octave jump of do and so as the dividing line. The first part is ***16 beats, with a slightly wavy melody line, as if the author is sitting by the spring, recounting the past in detail. This is the emotional expression of a blind artist who has experienced the bitterness and pain of the world: the melody is calm and sincere, Slightly sad but soft yet strong; the second part is ***8 beats. Following the ending note of the first part, this section begins on the high octave do. The music changes from calm and deep to slightly brighter, just like life. A ray of sunshine and a glimmer of hope occasionally appear in the middle; the third part is 16 beats again. This paragraph begins on the high octave SO after the ending note of the second part. The music suddenly turns exciting and high-spirited, profoundly revealing the author's feelings. Inner injustice and a strong and proud will to live.

The whole song changes the theme five times. With the statement, extension and expansion of the music, the emotions expressed are more fully expressed, and it seems that tragic pictures of the painful past are displayed in front of us. The musical image created by the music is relatively single and concentrated. Its multiple variations are not to express different contrasting musical emotions, but to deepen the theme. Therefore, although the speed of the whole song does not change much, its intensity changes greatly. Whenever a note longer than a quarter note is played, the weight of the bow changes, suddenly strong and sometimes weak, and the music rises and falls, which is exciting.