Has several important chapters on music, including those that identified octave and elaborated on its 22 keys. Bharata’s Natyashastra: First work to clarify & elaborate on the subject of musicology.Epics were set to narrative type of music called Jatigan.This type of ritualistic music was Sangama (later Vedic period)- chanting of verses, set to musical patterns. Development in music linked with devotional sites.Bharata’s Natyashastra(200 BC and 200 ADI- first reference to musical theory.Panini (500 BCE)- made first proper reference to the art of making music.Theories state- Om is the source of all ragas and notes.Kausitaki Brahmana puts dance, vocal & instrumental music together.Jaimini Brahmana speaks of dance and music.Aitareya Aranyaka- mentions parts of Veena.Gandharva Veda, science of music- Upaveda of Sama Veda.Santa Veda- lists all seven notes of the raga Kharaharapriya in descending order.First literary traces of music- Vedic times (2000 years ago).Musical instruments like seven-holed flute and Ravanahatha- recovered from sites of Indus Valley Civilization.Narada Muni (sage) - introduced music to earth & taught the inhabitants about a sound that pervades the whole universe called Naada brahma.India- long tradition of musical ingenuity.