Step 1: Concept Clarification:
This inquiry pertains to Indian classical music theory, focusing on the interrelation between 'Grama' and 'Murchhana'.
- A Grama is a foundational ancient scale or tuning system, comprising seven 'swaras' (notes).
- A Murchhana is a melodic scale or mode derived from a Grama, created by sequentially repositioning the tonic note ('Sa') to each of the other notes within that Grama.
Step 2: Detailed Exposition:
Given that a Grama contains seven notes, a new scale can be generated starting from each of these seven notes.
By cycling the tonic through all seven notes of the parent scale (Grama), precisely seven Murchhanas can be generated.
For instance, with a Grama comprising notes S, R, G, M, P, D, N, the resultant Murchhanas are:
1. S R G M P D N
2. R G M P D N S
3. G M P D N S R
...and so forth, encompassing all seven notes.
The figure 21 represents the aggregate count of Murchhanas across the three ancient Gramas (7 from Shadja Grama, 7 from Madhyama Grama, and 7 from Gandhara Grama). However, the question specifically asks for the quantity produced from each individual Grama.
Step 3: Conclusive Response:
Each Grama yields 7 Murchhanas.