Ache Lhamo Chham. Complied by jigme.

       Ache Lhomoi Chham. From Tshering tobgay's  blogs (opposition leader)

I’ve lifted the following description of the Ache Lhomoi dance  from the Asia-Pacific Database on Intangible Cultural Heritage. It was written by Lopen Phuntsho Gyeltshen of the Royal Academy of Performing Arts.
Ache Lhamo or Ashe Lhamo is regarded more as drama rather than dance, but many scholars accept it as dance-drama flourished in Bhutan since a long time back.
The characteristics
Ache Lhamo literally means Sister Goddess or Lady Goddess. This is performed by herdsmen once a year in keeping with the local customs. It tells or relates stories of people famed for their piety and miraculous achievements be it spiritual or temporal. The repertoire of this art was not very broad and the style of presentation cultivated by each group varies, although the overall performance of the general framework is the same. The dance by one man and a woman is accompanied by the rhythm of the cymbal and beating of the large-sided drum, while the story unfolds in operatic recitative and chorus. Aside from the main performance comic scenes are acted with great brilliance.
The Merak Saktenpa people perform this dance-drama once a year, for five days at a time. Apart from the yearly festival, Ache Lhamo is performed, at some great monastery or wealthy noble’s house and other special events of national importance.
History
The Tibetan saint and the bridge-builder Thangtong Gyalpo, in the 14th century, began his project of building iron bridges over many big rivers in Tibet. To provide adequate provisions for the laborers he developed an interesting means for collecting donations. The Chhongje Bena family with seven daughters was called upon and to each daughter he assigned different roles, while he himself beat the drum. A large audience was gathered and everyone who watched the play enjoyed it very much. This was the first time that drama was introduced in Tibet.
During the late 14th century, the saint expanded his activity of bridge construction over Bhutan, and it is believed that along with him this art traveled to Bhutan.
The saint regarded his building of iron-suspension bridges and related engineering feat as a practical application of thebodhisattva ideal, and his introduction of this dance-drama Ache Lhamo is in no way different from any Buddhist activity. He is also credited for the introduction of other classical dances and folk performing arts.