This is a single piece of music, consisting of 28 parts. In ancient times, in both the East and the West, one way of creating a lunar calendar system to complement the solar calendar was to divide the celestial sphere into 28 uneven segments along the ecliptic or the celestial equator based on the phases of the moon. These segments, as conceived in ancient astronomy, are known in English as the 28 Mansions. They can also be used as reference points for tracking the movement of the moon relative ...