Bulan Loi Luean

"Bulan Loi Luean" or "Bulan Luean Loi Fa" is a composition of Thai classical music traditionally credited to King Rama II. According to the traditional story, the King had a dream in which he saw the moon floating toward him and then heard beautiful music. Upon waking up, he played the music he heard in the dream and had court musicians arrange and remember the piece. The music has since been used in the classical play of Inao.
In 1871, King Chulalongkorn had a Western arrangement of the song adopted as the royal anthem, and it became known as "Sansoen Phra Barami". The composition was used as the royal anthem until 1888, when the current royal anthem " as opposed to "Sansoen Phra Barami was adopted. King Vajiravudh later had another arrangement, with new lyrics, adopted as the anthem of the Wild Tiger Corps in 1911, and it became known as "Sansoen Suea Pa".