2 Comments

  1. col
    October 12th, 2013 @ 3:31 am

    When chords such as A9 require the 9th note (B) adding; why is it not called A2? When the B is added, does it need to be in the octave above the other notes to be the 9th note?

    i am trying to understand chord theory but it does get very complicated!

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  2. Don Deering
    October 27th, 2014 @ 6:41 pm

    My understanding is that a 9 chord will be voiced like a dominant chord, i.e., it will have the flat 7 (in addition to the 1, 3 & 5). A sus2 chord won’t contain the 3 or the 7. So Asus2 would be voiced A, B & E. A9 would be voiced A, C#, E, G & B (but due to the limits of the neck, and for other reasons, it won’t usually/necessarily be voiced low to high).

    That was a question I used to have.

    I just noticed that your comment is from A YEAR and two weeks ago, maybe you’ve already found the answer.

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