Kecak Dance, Uluwatu, Bali

From Wikipedia:

“Also known as the Ramayana Monkey Chant, the piece, performed by a circle of 100 or more performers wearing checked cloth around their waists, percussively chanting “cak”, and throwing up their arms, depicts a battle from the Ramayana where monkeys help Prince Rama fight the evil King Ravana. However, Kecak has roots in sanghyang, a trance-inducing exorcism dance.”