My new approach to modes...

Discussion in 'Playing and Technique' started by Ed DeGenaro, Feb 5, 2012.

  1. Ed DeGenaro

    Ed DeGenaro Supporting Member

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    So in order to make sense of South Indian Taags (scales), I finally looked at them with a grid perspective to relate it to modes. What I came up with kinda changed of how I look at notes.

    First the South India (Carnatic) way of organizing their parent scales is very much a math/grid thing which once I had my head wrapped around it made so much sense.

    In their case they 72 Melakartas (7 note scales).
    All of them have to have the root and the perfect 5th.
    As in if we use the key of C you will have 72 7 note patterns that have the notes c and g.
    The they are devised into two groups of 36 scales. The first 36 have the perfect 4th (in the key of C the note f), the other 36 have the raised fourth (the note f# in the key of C)

    So...we have 3 of the possible 7 notes taken care of. Those will stay the same no matter what.
    Then they are grouped into 6 groups of 6. 6x6 =36...x2 72...get it?

    These groups of 6 are:
    first group
    root, b2, bb3, 4, 5,

    second group
    root, b2, b3, 4, 5,

    third group
    root, b2, 3, 4, 5,

    fourth group
    root, 2, b3, 4, 5,

    fifth group
    root, 2, 3, 4, 5,

    sixth group
    root, #2, 3, 4, 5,

    each group is broken down to the same pattern of how the missing notes are arranged...which are the 6 and 7
    b6, bb7
    b6, b7
    b6, 7
    6,b7
    6,7
    #6,7

    Why use say #6 and 7 instead of b7 and 7? Because 7 separate functions/pitches are used,

    So if we finish the 6 x6 note groups it becomes
    first group
    root, b2, bb3, 4, 5, b6, bb7
    root, b2, bb3, 4, 5, b6, b7
    root, b2, bb3, 4, 5, b6, 7
    root, b2, bb3, 4, 5, 6,b7
    root, b2, bb3, 4, 5, 6,7
    root, b2, bb3, 4, 5, #6,7

    second
    root, b2, b3, 4, 5, b6, bb7
    root, b2, b3, 4, 5, b6, b7
    root, b2, b3, 4, 5, b6, 7
    root, b2, b3, 4, 5, 6,b7
    root, b2, b3, 4, 5, 6,7
    root, b2, b3, 4, 5, #6,7

    third
    root, b2, 3, 4, 5, b6, bb7
    root, b2, 3, 4, 5, b6, b7
    root, b2, 3, 4, 5, b6, 7
    root, b2, 3, 4, 5, 6,b7
    root, b2, 3, 4, 5, 6,7
    root, b2, 3, 4, 5, #6,7

    fourth
    root, 2, b3, 4, 5, b6, bb7
    root, 2, b3, 4, 5, b6, b7
    root, 2, b3, 4, 5, b6, 7
    root, 2, b3, 4, 5, 6,b7
    root, 2, b3, 4, 5, 6,7
    root, 2, b3, 4, 5, #6,7

    fifth
    root, 2, 3, 4, 5, b6, bb7
    root, 2, 3, 4, 5, b6, b7
    root, 2, 3, 4, 5, b6, 7
    root, 2, 3, 4, 5, 6,b7
    root, 2, 3, 4, 5, 6,7
    root, 2, 3, 4, 5, #6,7

    sixth
    root, #2, 3, 4, 5, b6, bb7
    root, #2, 3, 4, 5, b6, b7
    root, #2, 3, 4, 5, b6, 7
    root, #2, 3, 4, 5, 6,b7
    root, #2, 3, 4, 5, 6,7
    root, #2, 3, 4, 5, #6,7

    Here's the chart laid out on a grid...
    http://content.sitezoogle.com/users/eddegenaro/images/content/melaharta-72-related-to-Western.jpg?3

    Now this made total sense to me in a Wayne Krantz IOS lay out kinda way.
    SO I related what I knew to them. Next I grabbed the 5 parent scales I use and they're 7 notes.
    Major, Melodic Minor, Harmonic Minor, Harmonic Major and double Harmonic and started a grid like that

    I ended up with 35 Western scales...obviously (5x7). But because of the different rules there is only an overlap of between the different systems.

    Here's the chart from the Western perspective...
    http://content.sitezoogle.com/users/eddegenaro/images/content/modes-to-raags.jpg?3
     
    Last edited: Feb 6, 2012
  2. Gigbag

    Gigbag Member

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    That's pretty cool Ed.
     
  3. JonR

    JonR Member

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    Excellent reference. I did something similar some years ago with the scales listed on this site:
    http://www.huygens-fokker.org/docs/modename.html

    I took the semitone formulae (2 2 1 2 2 2 1 etc) and arranged them in a similar order to yours (easy to do automatically on computer). Makes it easy to look up any unidentified scale, as well as compare similar scales.

    I haven't checked, but I'd be interested to know if you've found any scales that aren't listed on that site. (I do know that not all modes of every scale are listed.)
     
  4. todd richman

    todd richman Senior Member

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    Very interesting tutorial Ed. Thanks.
     
  5. Ed DeGenaro

    Ed DeGenaro Supporting Member

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    They all should be there since I'm merely dealing with the 72 parent scales.
     
  6. Ed DeGenaro

    Ed DeGenaro Supporting Member

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    Last stack had a typo of it being 2 instead of #2...fixed...
     

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