1) Body percussion 
Keplok is a style of clapping used in Javanese gamelan. The clapping is in a specific interlocking rhythmic pattern and is performed by the gerong when they are not singing. It is usually associated with the lively ciblon (Surakarta) or batangan (Yogyakarta) drumming. Usually one person claps on the on-beats while another claps on the off-beats, a...