The culture of Indonesia has been shaped by long interaction between original indigenous customs and multiple foreign influences. Indonesia is centrally-located along ancient trading routes between the Far East, South Asia and the Middle East, resulting in many cultural practices being strongly influenced by a multitude of religions, including Buddhism, Christianity, Confucianism, Hinduism, and Islam, all strong in the major trading cities. The result is a complex cultural mixture, often different from the original indigenous cultures. Examples of the fusion of Islam with Hinduism include Javanese Abangan belief. Balinese dances have stories about ancient Buddhist and Hindu kingdoms, while Islamic art forms and architecture are present in Sumatra, especially in the Minangkabau and Aceh regions. Traditional art, music and sport are combined in a martial art form called Pencak Silat. The Western world has influenced Indonesia in science, technology and modern entertainment such as television shows, film and music, as well as political system and issues. India has notably influenced Indonesian songs and movies. A popular type of song is the Indian-rhythmical dangdut, which is often mixed with Arab and Malay folk music. Despite the influences of foreign culture, some remote Indonesian regions still preserve uniquely indigenous culture. Indigenous ethnic groups Mentawai, Asmat, Dani, Dayak, Toraja and many others are still practising their ethnic rituals, customs and wearing traditional clothes. Traditional performing arts Music Indonesia is home to with those from the islands of Java, Sumatra and Bali being frequently recorded. The traditional music of West, Central, and East Java and Bali is the gamelan (traditional instruments include: gambang, bonang, saron, kenong, gong, and many more). Gamelan has been recognized as a Masterpiece of the Oral and Intangible Heritage of Humanity by UNESCO (United Nations Educational, Scientific and Cultural Organization). On 29 June 1965, Koes Plus, a leading Indonesian pop group in the 1960s, 1970s and 1980s, was imprisoned in Glodok, West Jakarta, for playing Western-style music. After the resignation of President Sukarno, the law was rescinded, and in the 1970s the Glodok prison was dismantled and replaced with a large shopping mall. Kroncong is a musical genre that uses guitars and ukulele as the main musical instruments. This genre had its roots in Portugal and was introduced by Portuguese traders in the 15th century. There is a traditional Keroncong Tugu music group in North Jakarta and other traditional Keroncong music groups in Maluku, with strong Portuguese influences. This music