Kecak (pronounced , alternate spellings: Ketjak and Ketjack) is a form of Balinese dance and music drama that was developed in the 1930s in Bali, Indonesia. Since its creation, it has been performed primarily by men, with the very first women's kecak group starting in 2006.
Also known as the Ramayana Monkey Chant, the piece, performed by a circle of at least 150 performers wearing checked cloth around their waists, percussively chanting "cak" and moving their hands and arms, depicts a battle from the Ramayana. The monkey-like Vanara lead by Hanuman helped Prince Rama fight the evil King Ravana. Kecak has roots in sanghyang, a trance-inducing exorcism dance.