The Tale of Yagapriya and the Tonnetz
Yagapriya is the 31st raga, out of a total of 72, in the Carnatic (South Indian) Melakarta system of seven-note parent ragas, from which other smaller ragas are derived.
Besides its Carnatic origin, this post was inspired as much by my belated introduction to the Neo-Riemannian “Tonnetz” (German for “tone network” and pronounced "tone netz"), which clearly illustrates Yagapriya's internal intervallic and chordal relationships.
I had never heard of the Tonnetz before receiving an email recently from Uruguayan mathematics researcher and amateur guitarist Alfonso Artigue, who's interest in both disciplines lead him to the discovery of the relationship between the Tonnetz and the Yagapriya raga. He had found an earlier post I had done on the scale and contacted me about his discovery. I Thank you, Alfonso!. Yagapriya thanks you, too.