A small analysis on how to make out different unique chords (at least the basic types if not advanced added chords much) using the notes of a particular scale or raga of the carnatic System.
for example : let us take the janya ragam Revathi in the key of C.
The notes used in this scale are C, Db, F, G, Bb and C again.
Let us go note by note and see what are the chords that we can possibly bring out using them as the tonic of the chord.
Note C
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1. C5 ( C and G )
2. Csus4 ( C F G )
3. C7sus4 ( C F G Bb )
Note Db
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4. Db b5 ( Db F Abb or G )
*5a. DbM7b5 ( Db F Abb or G C )
Note F
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6. F5 ( F and C )
7. Fsus4 ( F Bb C )
Note G
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8. Gdim ( G Bb Db )
9. Gm7b5 ( G Bb Db F )
Note Bb
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10. Bb5 ( Bb and F )
11. Bbm ( Bb Db F )
12. Bbm6 ( Bb Db F G )
13. Bbm(9) ( Bb Db F C )
*5b. Bbm6(9) ( Bb Db F G C ) same as DbM7b5 but inverted gives it a different name though 🙂
So just 5 degrees(notes) in this raga and we can at least make out 13 chords in this…May be few more…
Wondering how many more would be possible in a Melakartha Ragam where there are 7 notes in the scale.
I think we can also use 11b9 chord for revathi raagam.