This dance commemorates the historic event in Tibet when Dharma King Trisong Detsen invited Abbot Shantarakshita and Acharya Padmasambhava (Guru Rinpoche) from India to Tibet to help spread Buddhism there. They are referred to as the Sun, Moon and the Star in the lyrics.
This dance is part of the King Trisong Detsen biopic, composed by the Tibetan Institute of Performing Arts in Dharamsala, India