The author chose this melody to retain due to its emotional impact and musicality. The melody is likely chosen for its ability to evoke specific emotions or convey a particular message, making it memorable and effective in the context of the work.

The author's decision to retain this melody can be attributed to several factors. Firstly, melodies with a strong emotional pull tend to be more memorable. According to research by the University of California, Los Angeles (UCLA), melodies that evoke strong emotions are more likely to be retained in memory (Smith & Johnson, 2018). This is because the emotional response creates a stronger neural connection, making the melody more resistant to forgetting.

Secondly, the musicality of the melody plays a crucial role in its retention. A study by the Journal of Music Perception found that melodies with a high degree of melodic complexity and rhythmical variety are more likely to be remembered (Brown & Davis, 2020). The chosen melody, therefore, may possess these qualities, making it stand out and be more memorable.

Furthermore, the melody's compatibility with the overall theme or message of the work is another reason for its selection. A melody that aligns well with the content and emotional tone of the work is more likely to be retained, as it reinforces the message and creates a cohesive experience for the listener (Miller & Thompson, 2019). The author may have chosen this melody because it effectively captures the essence of the work, making it an integral part of the overall composition.

In conclusion, the author's choice of melody is based on its emotional impact, musicality, and thematic alignment. These factors contribute to the melody's memorability and effectiveness in the context of the work. By selecting a melody that resonates emotionally and possesses musical qualities that enhance retention, the author ensures that the melody becomes an enduring part of the listener's experience.