JayaDeva's Gita Govinda (1153 AD)
Unlike the other works described here, Gita Govinda, is not a musicology text. It is the earliest example of regular musical composition, each song being set in a particular raga and tala.
Jayadeva was born in village Kenubilva Gram (Kenduli). He was at the court of the Bengal king Lakshman Sena. His masterpiece Gita Govinda has immortalized him. Gita Govinda is a sringara mahakavya in 12 sargas of Sanskrit. It consists of 24 songs, each containing 8 charanas. Hence the name Ashtapadi.
Ashtapadi hymns are the earliest examples of regular musical compositions each song being set in a special raga and tala. (Prof. Sambamoorthy points out that for the earlier Tevaram and Tiruvachagam only the name of the pann (raga) is mentioned and not the tala). The 19th Ashtapadi, called Darsana Ashtapadi and Sanjaivini Ashtapadi (after two remarkable incidents in the life of Jayadeva), has acquired considerable significance and is widely and frequently sung.
The Ashtapadi hymns are not sung in the original raga(s) and tala(s). Sarangadeva, the 13th century author of the great treatise "Sangita Ratnakara" refers to the ragas of Jayadeva as "Prakprasiddha" (meaning that the ragas were once in vogue and became obsolete).