Four Reigns The Musical storytelling tactics used by the narrator at the beginning of the reign of King Rama V until the end of the reign of King Ananda Mahidol.
Four arms The music culture of all narrative tactics used by individual narrative era starting from the reign of King Rama v until the end of the reign of King Ananda Mahidol.
Four land use strategy for the legend, musical told the whole story by the step-by-period starting from the reign of king Chulachomklao until the end of the reign of His Majesty King Ananda Mahidol