One of his first assignments in the royal service was to record the stories of traditional Burmese spirits Thirty Seven Nats, along with their traditional rituals, dances and music. He accomplished the task with the aid of musicians Tayoke and Myat Tha. In 1789, the 23-year-old Sa was placed in a Royal Commission consisted of princes and ministers, charged with translating Siamese and Javanese dramas from Thai to Burmese. (Siamese court musicians and artists captured from Ayutthaya in 1767 had been staging performances in the Burmese court, and training Burmese professional actors in Siamese style.) With the help of Siamese artists, the commission adapted two important epics from Thai to Burmese: the Siamese Ramayana and the Enao, the Siamese version of Javanese Panji tales into Burmese Yama Zatdaw and Enaung Zatdaw. With Enaung, Sa wrote the dialogue, songs, musical scores, arrangements and stage directions. Sa also updated the 7-string Burmese harp into a 13-string one.