Tonality layout and harmony application are a major feature of this song. Although the main theme of the work is A minor, it starts from the subordinate key E minor, and changes many times in just over twenty bars: first, it turns to the relative major G major in the fourth bar, then the material of the first sentence turns to B minor when the second sentence in the eighth bar enters, and then turns to D major in the 10 bar according to the previous mode of modulation. Then, the harmony was unexpectedly carried out in the section 1 1: instead of carrying out the main chord in D major according to the previous mode, the root tone of the D major chord was raised to the auxiliary leading seventh chord VII7/II, and at the same time, the redirected seventh chord VII7/V in A minor became the middle chord, so that the tonality returned to the main theme after A minor smoothly.
Tonality is mostly in a free state, so the timbre of this work is very weak most of the time, and the melody hums intermittently, which makes it difficult for us to distinguish this work from the style characteristics of the sound. In fact, this kind of tonal fuzzy layout technique and line drawing of voice have some characteristics of impressionist harmony.