The difference between a 9 and a sus2/add2 chord is whether or not the 7th is present. An add 2/add9 chord is just a major triad with a second/ninth added. A 9th chord implies a 7th chord as a basic structure.
Same thing goes for the C13 vs Cadd6. Their basic structures are different as are their functions. The Cadd6 is a tonic function chord and is a major triad with a major sixth instead of a seventh. The C13 is a dominant function chord and implies a dominant seventh chord underneath. The ninth and eleventh may be present but needn't be.
Just what I recall from my theory classes. Taris
At 12:58 PM 4/25/2005, you wrote:
Hi, Everyone...
I was wondering what the "rule" is as far as when to call a chord a "suspended" chord or an "add X" chord. For example, a Gsus4 - meaning G in the root, then C, then D... I have seen this same chord sometimes labelled as a "GaddC" or "Gadd4". Is it only referred to as the "suspended 4th" (or 2nd or whatever the case may be) if the 4th is going to resolve to the 3rd? I personally have always called this chord a Gsus4... But now I'm notating for a client and want to make sure I have it right!
Another question is the "9th" chord vs. the "sus2" chord or "add2"... For example, G9 - would be G-B-D-F-A. If the F is left out, I'm assuming that's when you'd refer to is as a "Gsus2" instead? Or is Gadd2 or GaddA also proper terminology? I would always call this a Gsus2...??
Another similar example/question is the 6th chord. For example a C6 (C-E-G-A) - I've seen this called a C13 (since A is also the 13th!) - is this correct - or only in certain situations - i.e., if the 7th, 9th, or 11th is also present?
Just trying to brush up on my music theory - it's been a while since I've had to dig into this deeper stuff!
Thanks for any clarification of this!
Jacki
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