Acting and dancing are inseparable, each step having a definite meaning which is emphasized by precisely defined music to suggest walking, marching, laughing, etc. Because some actors and actresses are masked and cannot speak, narrative verses are usually recited and sung by a chorus that sits with the accompanying woodwind, gong, and drum ensemble. The leading male and female performers do not wear masks and on some occasions they may speak. The ornate papier mache masks, decorated with gold, lacquer, and paste jewels, are works of art and perfectly portray the protagonists' personalities. Costumes are made of rich brocades adorned with sparkling costume jewellery and closely resemble the apparel of royalty and celestial beings in classical Thai mural paintings .
Major characters are readily identifiable by the predominant colours of their costumes.
Phra Ram , the hero, wears deep green, while his brother, Phra Lak , wears gold and the monkey-god Hanuman wears white. Khon productions were originally so long more than 20 hours that performances were staged on two consecutive days. King Rama II 's shorter version of the epic is used for dramatic purposes and contemporary adaptations of certain episodes are as short as three hours. Lakhon Nai drama was originally presented only by court ladies in the palace. It was graceful, romantic, and highly stylized.