Kecak Balinese cultural dance

Kecak Balinese cultural dance is a dance originating from Bali Indonesia.  this cultural dance demonstrated by many [dozens or more] of the male dancers who sit in rows in a circle and with a certain rhythm and chanting "cak" and raised both arms, The dancers are sitting in a circle is wearing a plaid fabric like a chessboard their waist. Besides the dancers, there were other dancers who portray the characters of Ramayana like Rama, Shinta, Ravana, Hanuman and Sugriva.