The treatise Sangeetha Ratnakara, written by Sarngadeva in the 13th century, is one of the most important and comprehensive texts on Indian classical music. It is divided into seven chapters, each focusing on a different aspect of music and performance.
The Seven Chapters of Sangeetha Ratnakara:
\begin{enumerate
Svaradhyaya – on swaras
Ragaadhyaya – on ragas
Prakirnakadhyaya – miscellaneous topics
Prabandhadhyaya – on musical forms
Taaladhyaya – on tala
Vadyadhyaya – on musical instruments
Nartanadhyaya – on dance
\end{enumerate
This text is a vital bridge between ancient and modern Indian music and is studied in both Carnatic and Hindustani systems.