Gamelan construction of musical instruments, as well as scheduling performances at the court. In the palaces of Java the oldest known ensembles, Gamelan "Munggang" and "Gamelan Kodok Ngorek", are apparently from the 12th century. These formed the basis of a "loud style" of music. In contrast, a "soft style" developed out of the "kemanak" tradition and is related to the traditions of singing Javanese poetry, in a manner often believed to be similar to the chorus that accompanies the modern "bedhaya" dance. In the 17th century, these loud and soft styles mixed, and to a large extent the variety of modern
Indonesian art "[[gambuh]]" and "[[topeng]]", Javanese "[[wayang wong]], [[ketoprak]]" and "[[ludruk]]"; Betawi "[[lenong]]"; Sundanese "[[sandiwara]]"; also colonial "[[toneel]]". [[File:Wayang Kulit - Museum Wayang 02.jpg|thumb|right|Indonesian Javanese "[[wayang kulit]]" shadow puppet.]] "Wayang" refer to a theatrical performance with puppets or human dancers. When the term is used to refer to kinds of puppet theatre, sometimes the puppet itself is referred to as "wayang." Performances of [[Shadow play|shadow puppet]] theatre is known as "wayang kulit", are accompanied by a "[[gamelan]]" orchestra in [[Java (island)|Java]], and by "[[Gamelan gender wayang|gender wayang]]" in [[Bali]]. It has been developed into a complete and refined artform, especially in Java