Indian classical music originated from Vedic hymns of Aryan religious ceremonies. The so-called "Vedic hymn period" in Indian music history is about16th century BC to 4th century BC. Among the above four Vedas, Rigveda contains 1028 poems, some of which are myths and legends, and some are descriptions of natural phenomena and social real life. Samoyed Veda is a collection of songs sung by music. Yeroveda explained how to apply these songs to priests. When singing, the designated Brahmin priest sings in three tones: high, low and medium. These two immortal Indian epics have had a profound influence on the development of Indian music culture and become one of the eternal themes of Indian music and dance. It records the oldest Saatchi and Mahatma scales in India, the three tones and seven modes used in singing, and the seven "rases" mentioned in Indian music aesthetics. It spreads in East Asia in various forms.
In the 2nd century AD, Brahma (about 100 ~ about 200 AD) wrote a theoretical work, On Music and Dance, which appeared in Sanskrit poetry. There are 39 chapters in the book, of which 28-33 chapters are devoted to music, thus forming a complete system of Indian music theory. Chapter 28 discusses that the Indian scale consists of 22 "Shruti" (that is, micro-intervals) and seven basic tones, and these seven tones respectively constitute two basic scales: saxophone scale and horse scale. Chapters 29 and 30 introduce stringed instruments and wind instruments respectively, chapter 3 1 discusses rhythm, chapter 32 discusses related singing methods, and chapter 33 introduces the usage of drums.