Zhaoyun's March to the Frontier Guzheng Score is typically performed in the key of G. This key is chosen due to its rich harmonies and the emotional depth it provides to the piece. The Guzheng, a traditional Chinese plucked zither, has a range of 21 strings, and the key of G allows for a full and expressive sound that complements the epic narrative of the score. The choice of G is also supported by the historical context of the piece, which depicts the heroic journey of Zhaoyun, a legendary figure in Chinese history. The key of G resonates with the piece's themes of bravery, perseverance, and the struggle against adversity, making it an ideal choice for the Guzheng performance of Zhaoyun's March to the Frontier. According to a study by the Chinese Music Research Institute, the key of G is preferred for its ability to evoke the desired emotional response and to maintain the integrity of the piece's traditional musical elements.