Indonesian music originates from local people in various provinces across Indonesia, including Java, Sumatra, and Kalimantan. Traditionally, Indonesian music was used to celebrate events, though now it is more commonly for entertainment. Some common Indonesian musical instruments include kolintang, angklung, gamelan, seruling, kendang, and calung. The history of Indonesian music began with simple instruments in Java and Bali, performed outdoors rather than in theaters. Popular genres include dangdut, orchestra, Javanese songs, gamelan/angklung, Indo-pop, and others. Famous Indonesian songs and composers demonstrate the country's rich musical traditions.