Step 1: Concept
The study of Indian musicology involves understanding various texts that describe musical elements, including Gamakas. A Gamaka is a microtonal variation or ornamentation in Carnatic music.
Step 2: Meaning
Gamakas are essential ornaments used to embellish the melody in Indian classical music, particularly in Carnatic music. They add expressiveness and complexity to the performance.
Step 3: Analysis
To determine which text among the given options discusses 7 Gamakas, we need to consider the historical significance of each work:
Chaturdandi Prakasika: Authored by Ramamatya, this text is known for its detailed description of musical scales and modes but does not specifically focus on a list of 7 Gamakas.
Sangita Samaya Sara: Written by Narayana Bhatta, it provides insights into the theory of music but does not explicitly mention or list 7 specific Gamakas.
Swaramela Kalanidhi: Composed by Venkatamakhin, this text is significant for its contribution to the theory of melakarta ragas and their classification. It also discusses various musical elements but does not specifically detail 7 Gamakas.
Sangita Ratnakara: Authored by Sarngadeva, it is one of the most comprehensive treatises on Indian musicology. This text extensively covers various aspects of music theory, including detailed descriptions and classifications of Gamakas. It mentions 7 specific Gamakas: Sthavari, Kausiki, Kaisiki, Kanti, Madhyama, Vahini, and Nada.
Step 4: Conclusion
The text that discusses 7 Gamakas is Sangita Ratnakara by Sarngadeva.
Final Answer: (D)