The Natyashastra is an ancient Indian treatise on performing arts, attributed to the sage Bharata Muni. It is believed to have been composed between 200 BCE and 200 CE and serves as a foundational text for Indian classical dance, theater, and drama. The work covers various aspects of performance, including acting techniques, stage design, and the use of music and dance. This comprehensive guide outlines the principles of rasa (emotional experience) and bhava (mood), emphasizing the importance of expressing emotions through performance. The Natyashastra has significantly influenced the development of various regional art forms in India, making it a crucial reference for artists and scholars alike.