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Practical difference between a 6 chord and a 13 chord when walking?

I have been meaning to break out my six string and restring it EADGBE, esp. since I spending more time on a jazz guitar site. Now I am going to do it. Going to get me some b9#11. I am not sure if they are extensions or alterations, so I am just going to call them "zazzy".

 
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Well, well. A 13 includes b7, 9, 11, yes, but the main sound you want is the major 3rd, and the tension between b7 and 13. The 9th and 11th are usually omitted. (And on a side note: if you want the 11 in there, use 13sus to replace the 3rd). The main point of a b13-chord is the dissonance between the 5th and the b13. If you don't want the perfect 5th, write + (or #5) to indicate a raised 5th instead of using b13.

What do you think about my C13 in that kind of form?
C13.PNG
 
When notating extensions on a chord symbol, it implies all the extensions below by default. ...[snip]... We shouldn't have to indicate a symbol like this: C13(add9, no 11) for example

Unless you're being pedantic by differentiating between the correct #11 tension and the incorrect natural 11 void note, those two statements are contradictory:

If the chord symbol C13 "implies all the extensions below by default" and you explicitly don't want to hear the #11 you do have to indicate a symbol like C13(add9, no 11). Or C13(add9, no #11) if you prefer.

Chord symbols are shorthand. The problem is, as soon as you try to use them to indicate concepts that can't be easily condensed and comprehended with shorthand symbols, they fail.



we should avoid having a major third and an eleven within a chord.

fwiw one of my favorite chords is a dominant 7sus4 with the major 3rd on top, so that you get that major 7th interval between the 4(11) and the 3. Of course, technically (and sonically) the major third is the tension in that case; it's a very piquant and unique variation of the sus4 chord, not a major triad with an extra tension/extension. But if you've never heard one, check it out!
 
Unless you're being pedantic by differentiating between the correct #11 tension and the incorrect natural 11 void note, those two statements are contradictory:

If the chord symbol C13 "implies all the extensions below by default" and you explicitly don't want to hear the #11 you do have to indicate a symbol like C13(add9, no 11). Or C13(add9, no #11) if you prefer.

Chord symbols are shorthand. The problem is, as soon as you try to use them to indicate concepts that can't be easily condensed and comprehended with shorthand symbols, they fail.





fwiw one of my favorite chords is a dominant 7sus4 with the major 3rd on top, so that you get that major 7th interval between the 4(11) and the 3. Of course, technically (and sonically) the major third is the tension in that case; it's a very piquant and unique variation of the sus4 chord, not a major triad with an extra tension/extension. But if you've never heard one, check it out!
Yes I agree that chords notation is far from perfect. My reply was regarding the wiki page about the thirteen chord. Having a basic knowledge about harmony rules is a big help when interpreting chord symbols. Unfortunately it is not standarized yet. I spent the last 40 years sight-reading charts daily as a studio player and yes I've seen them all. And they should make sense on first sight. You don't have time to analyze them. If a writer wants a specific voicing then it should be written in the right order and span.

As for the sus4 and major third played together, yes that rule can be broken if musically it is well construct like in some guitar voicing as a cluster or in a very fancy harmony when the specific voicing is written as notes and not as a chord symbol for the best result.
 
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Could you elaborate, please, the need for C9 (add13) instead of C13?
Just to make sure that 11th is included?
To my knowledge it is exactly the same chord because every educated musician will know that the 11 is omitted in this chord just like the third is omitted in a C11. And a simple notation like C13 is way much easier and faster to read, analyse and play then a symbol with a bunch of extras for nothing.
 
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Would you prefer to see Bbma(6)/C or C11?
C11 is getting less and less used. Bb/C is a great way to express the same sound in a very musical way. The comp players will know immediately how to voice it. The fifth is always the first note to remove in a voicing when you have to take a note out of the voicing. But there is no problem to include it it, even in the bass ;-)

And for the record it could be notated like this also: Bb6/C or Gmin7/C
I see that you did included it in your edit ;-)

The musical context will help decide the best way to indicate the desired sound with the proper symbol imo.
 
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