genre was popular in the first half of the 20th century; a contemporary form of Kroncong is called Pop Kroncong. Angklung musical orchestra, native of West Java, received international recognition as UNESCO has listed the traditional West Java musical instrument made from bamboo in the list of intangible cultural heritage. The soft Sasando music from the province of East Nusa Tenggara in West Timor is completely different. Sasando uses an instrument made from a split leaf of the Lontar palm (Borassus flabellifer), which bears some resemblance to a harp. Dance Indonesian dance reflects the diversity of culture from ethnic groups that composed the nation of Indonesia. Austronesian roots and Melanesian tribal dance forms are visible, and influences ranging from neighbouring Asian countries; such as India, China, and Middle East to European western styles through colonization. Each ethnic group has its own distinct dances; makes total dances in Indonesia are more than 3000 Indonesian original dances. However, the dances of Indonesia can be divided into three eras; the Prehistoric Era, the Hindu/Buddhist Era, and the Era of Islam, and into two genres; court dance and folk dance. There is a continuum in the traditional dances depicting episodes from the Ramayana and Mahabharata from India, ranging through Thailand, all the way to Bali. There is a marked difference, though, between the highly stylized dances of the courts of Yogyakarta and Surakarta and their popular variations. While the court dances are promoted and even performed internationally, the popular forms of dance art and drama must largely be discovered locally. Reog Ponorogo is also a dance that originated from the district Ponorogo, East Java, which is a visualization of the legendary story Wengker kingdom and the kingdom of Kediri. A popular line dance called Poco-poco was originated in Indonesia and also popular in Malaysia, but at early April 2011 Malaysian Islamic clerics banned the poco-poco dance for Muslims due to them believing it is traditionally a Christian dance and that its steps make the sign of the cross. During the Intergovernmental Committee for the Safeguarding of the Intangible Cultural Heritage convention in 29 November to 4 December 2015 in Windhoek, Namibia, UNESCO recognizes three genres of traditional dance in Bali, Indonesia, as Intangible cultural heritage. The three genres includes Wali (sacred dances), Bebali (semi-sacred dances) and Balih-balihan (dances for entertainment purposes). Balinese dance has been proposed since 2011, and officially recognized in 2015. Previously,