The whole point of a dominant chord is to supply the dissonance and leading tone to the root. In jazz, 7th chords have chromatically altered extensions to heighten the tension, so why is the b9 interval between 3rd and 4th not allowed?
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Omitting the third makes the chord 7sus4. The ones you hear in jazz tend to be non-functional, quartal voicings used in modal contexts. To my ears they completely lack the dominant sound of a regular 7th chord.
Cool beans, I'll have to try that just to hear it.True, those chords don't have the same feel as a common or garden dominant 7th chord, but I don't think that necessarily makes them nonfunctional (though they certainly can be). A V9sus4 chord (basically equivalent to an 11th chord in common practice, even if not in the most technical definition) can resolve perfectly well to a tonic. V-I is not the only possible cadence; IV-I can also be a good strong cadence (plagal cadence). In a way, you could think of a V9sus4 (11) chord as being a sort of hybrid of IV and V in relation to your I. The root movement is a V-I, but the upper extensions (7-9-11) resolve more like a IV-I.
If you play keys at all, try this. Starting from low to high, play C-G in your left hand, then Bb-D-F with your right. Next, play just F in your left hand and A-C-F in your right.Cool beans, I'll have to try that just to hear it.Not that I can even play a V9sus4 (11).
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Well, never say never, but yeah, it usually is omitted.Is it always omitted? Is it merely the "running out of fingers" effect?
The Major 3rd can be voiced in a Dominant 7th Sus chord - you just need to find the most pleasant voicing - in the case below, the Major 3rd is separated from the Suspended 4 with a lot of space - an interval of a major 7th separates them.
If it is voiced below the Sus 4, (a half-step below), it still works, but it grinds a bit more. IME.
Here is a useful voicing for Bb7, 9, 13, sus, add maj 3 - a beautiful sound. Try it at a piano, and "see".
IMFO, of course.
Thanks.
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Eb (up to) D is a major 7th interval.it is a b9 in your exemple...
it is a b9 in your exemple...
Good point about functional vs. non-functional dominant chords. Not everything is designed to resolve to the tonic.
I think the OP had a good question and was very astute to notice that something suspicious was going on there.
I think it's mostly just tradition. To my ears it doesn't really sound that much more dissonant than your typical alterations (b9, #11, b13). I was in a prog band once where the guitarist used an 11 chord (with a major third) on one song. He picked it as an arpeggio, but it was still a pretty spicy chord. But in context it was perfect.
I'll say this, though: in functional harmony, the V chord wants to go to the I. So G7 goes to C. If you put an 11 in that G7, you kind of spoil the resolve, by giving away the C before you even get there.
Omitting the third makes the chord 7sus4. The ones you hear in jazz tend to be non-functional, quartal voicings used in modal contexts. To my ears they completely lack the dominant sound of a regular 7th chord.