dance in Aceh, which adopted dance styles and music typical of Arab and Persia, and combined them with indigenous styles to form a newer generation of dance in the era of Islam. Saman dance was initially performed during the Islamic missionary activity (dawah) or during the certain customary events such as the commemoration of the Islamic prophet Muhammad's birthday. Today more commonly performed during any official events. The adoption of Persian and Arab musical instruments, such as rebana, tambur, and gendang drums that has become the main instrument in Islamic dances, as well as the chant that often quotes Islamic chants. Architecture The architecture of Indonesia after the spread of Islam was prominently characterized by the religious structure with the combination of Islamic implications and Indonesian architectural traditions. Initial forms of the mosque, for example, were predominantly built in the vernacular Indonesian architectural style which employs Hindu, Buddhist or Chinese architectural elements, and notably didn't equip orthodox form of Islamic architectural elements such as dome and minaret. Vernacular style mosques in Java is distinguished by its tall timber multi-level roofs known as tajug, similar to the pagodas of Balinese Hindu temples and derived from Indian and Chinese architectural styles. Another characteristic of Javanese style mosque is the usage of gamelan drum instrument bedug as a substitute of prayer call (adhan). Bedug is often installed in the roofed front porch attached to the building known as serambi. Bedug is commonly used for prayer call or the signal during Ramadan throughout the Javanese mosques up until today. Prominent examples of mosques with vernacular Javanese designs are Demak Mosque in Demak, built in 1474, and the Menara Kudus Mosque in Kudus, built in 1549, whose minaret is thought to be the watchtower of an earlier Hindu temple. Vernacular style mosques in Minangkabau area is distinguished by its multi-layer roof made of fiber resembling Rumah Gadang, the Minangkabau residential building. Prominent examples of mosques with vernacular Minangkabau designs are Bingkudu Mosque, founded in 1823 by the Padris, and Jami Mosque of Taluak, built in 1860. In West Sumatra, there is also a tradition of multi-purpose religious architecture known as surau which is often built in vernacular Minangkabau style as well, with three- or five-tiered roofs and woodcarvings engraved in the facade. Vernacular style mosques in Kalimantan is influenced by the Javanese counterparts, exemplified by the Banjar architecture which employs three- or five-tiered roof with