The added 9th chord|
Formula:
| 1 2 3 5 |
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Common
Abbreviations:
| (add2), (add9), 2, 2nd, add2, add9, M/9 |
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Most popular root:
| C, D, A, G, F |
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Popularity:
| 29 |
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Top Users:
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Common Styles:
| Blues, Country, Folk, Jazz, Reggae |
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Some add9 chord examples. | Description:
As the label indicates, the add9 chord is a major chord with a 9th added. It is a four note chord, as opposed to the proper 9-chord, which is a five note chord. An add9 has the notes 1-3-5-9, while the 9-chord has 1-3-5-b7-9. A Cadd9 has C-E-G-D, while a C9 has C-E-G-Bb-D. The b7 note makes a huge difference, as it together with the 3 constitutes the important tritone in the 7th chord. The add9 is a sweet sounding chord, while the 9-chord is dissonant and drives the harmony towards a solution.
You do not need very advanced mathematical skills to see that 8+1=9, and that the D in a C-major scale could be labeled as a 2 rather than as a 9. For a proper 9-chord, the reason is that it is an extended 7th chord. But this is not the case for the add9, and I cannot give any good reasons for why this is the most common way of labeling the chord. And having said that, you might see the chord labeled as either a 2 chord, or add2 chord.
Description courtesy of
http://www.torvund.net/guitar/chords/add9.asp | Songs using added 9th chord:
(NB Common types such as Maj, m, 7 will generate longs lists)
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