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Originally Posted by Navdeep_Singh
"In the example (Amin7-D7-Gmaj7) Amin7 (C6) actually comes from a different scale than the tonic Gmaj7."
The IV in a major key is a major chord so that is to be expected.
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04-08-2024 06:27 PM
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Originally Posted by Tal_175
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Originally Posted by garybaldy
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Originally Posted by Tal_175
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Originally Posted by garybaldy
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The middle 8 of Take the A Train has always been a bit of a conundrum for me. Ie the first for bars of IV. Do you consider it to be a key change (as it's 4 bars) and play over it as if it's a I chord or do you keep to the song's key?
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Originally Posted by Tal_175
Alan’s book is heavy on applications, so he might cover specific cases that don’t seem to meet your criteria, but he also talks about the subject broadly. I’ve found the little variations on the V-I movement to be pretty handy.
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Originally Posted by garybaldy
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Originally Posted by pamosmusic
To recap:
Suppose you have a ii V in C:
Dmin7 G7 Cmaj
The typical recipe is to use F6dim over Dmin7 and use Dmin6 or Abmin6 over G7.
But the harmonized scale over Dmin7(F6dim) doesn't have the note B (it's got Bb). Now some treat the 6th (B) in the ii minor chord as an avoid note. I don't want to go so far as to suggest that as the reason for the lack of B in the harmony, lol.
In chord-melody applications, if you are harmonizing a scalar melody (or bass line) over the ii chord using this approach, this is a bit of a problem.
The 6th on the 5th examples I looked at also seem to not use that note.Last edited by Tal_175; 04-11-2024 at 03:55 PM.
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Originally Posted by Tal_175
So if you use the G6dim scale (over the Am7 in the II V I in G maj) instead of the C6dim you are alternating the G6 chord with the F#dim chord which can be looked at as alternating Cmaj7/9 (G6 is the upper extensions) with Cdim. That eliminates the F nat note.
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Originally Posted by Tal_175
The scales are straightforwardly combination of the parent chord and the diminished chord. So that’s why there’s no B in the F6. But there is the open possibility of a chord scale that does include it the B by using that 6th on the 5.
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Originally Posted by pamosmusic
The thing is, I can use a variety of approaches to harmonize that note. What I find interesting is, the 6dim applications that I have seen don't do it.
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Originally Posted by garybaldy
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Originally Posted by Tal_175
Otherwise, I’m not a BH purist, so if something doesn’t fit, I just move to a different thing.
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Originally Posted by mr. beaumont
I've played bass for many years and I've generally adhered to what I was told as a teenager (in the 70s) which was, with passing notes between chord tones, to keep to notes of the key you are in. Over the last 50 years though I've learned that there are exceptions ofcourse.
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Originally Posted by Tal_175
The defining factor of Dm7 into G7 is the change of D Minor Seventh's 'C' note to G Seventh's 'B' note.
Barry's F6o has 'C' and Dm6o & Abm6o have 'B' notes making the move strong.
See pages 39-45.
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Originally Posted by A. Kingstone
Thanks for your response. That's my understanding as well. I just thought it was interesting that F6o amounts to using the harmonized D natural minor scale over Dmin7 which implies a different key than the one the progression is in. So in a chord-melody situation if we were using F6o to Dm6o &Abm6o to harmonize a melody over II V, we would be "avoiding" the note B over Dmin (instead playing Bb and C, skipping over B) or we would be using a different approach if there is a B in the melody.
In comping contexts, if the soloist using the typical BH concept of playing the G dominant scale over II-V, the comping pattern of II would also be a little bit out. I guess Bb is a passing note in the typical applications of the 6 diminished chords. I used it this way before without thinking about it after all.
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Tonicizing the ii, so not dorian.
If you want to keep the voices moving when harmonizing the 6th degree I've found an aux dim works and sounds nice as it keeps the dim sonority (vi dim7).
6th on the 5th (emi7 on ami7) is too 7sus for me.
Depends on the melodic/harmonic rhythm too. Could just diatonic or chromatic plane but then you're getting away from BH... or are you?
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Originally Posted by bediles
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Originally Posted by Tal_175
*** this isn’t a knock. Organization is a teachers job mostly and I find his organization to be remarkably simple and Illuminating.
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Originally Posted by pamosmusic
- Harmonizing the scale by using inversions over the chord tones and passing diminished chords over the non-chord tones.
- Creating a movement by tonicizing the chord with the V7b9 - I motion.
(We are leaving the borrowing notions aside for now to look at the nature of the scale).
For some chord types, these are the same things. For example if you use C6o over Cmaj6 chord, you'd be harmonizing all the notes of the C major scale: C, D, E, F, G, A, B. There will also be an added diminished note Ab. So you can use this movement to both harmonize melodies in Cmaj or create motion over a static major chord with G7b9 Cmaj7 inversions.
But this symmetry is broken when it comes to using the 6dim scale over the ii chord in a ii-V progression.
F6o has : F G A Bb C D E with the added diminished note Db. So starting from D we got D E F G A Bb C. In other words, we are introducing Bb and removing B temporarily in a progression that's in the key of C (Dmin7-G7-Cmaj7).
This still works perfectly well if we hear the movement as tonicizing Dmin since Bb is now the b9 of A7b9. The note B would be less ideal since the target is a minor chord.
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Originally Posted by Tal_175
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Originally Posted by garybaldy
I dunno, I’m also ignorant to all the jazz rules and vocabulary.
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I’m not a great person to ask about the Barry harmonic concept, but it struck me that many of the basic options of the ii V I are folded into the I maj6-dim chord.
One can construct a IIm7 and a IIm7b5 chord in the maj6-dim. I tend to elide that chord into the maj6-dim diminished/borrowed note stuff, and if I have longer on the II you can run the scale for the chord (IV6 or IIm6, say) and treat it as a thing in itself.
This maps perfectly well to the way it’s treated in tunes, for example Honesuckle/scrapple - at least in bop (but ii chords are rarer in swing music anyway.) The b6 is a natural thing to play here.
(If I go for IIm6 I’m kind of leaning into the idea of an extended V7 sound - Charlie Christian style. IIm7 gives the suspension.)
It’s the sort of thing where context and what is pleasing to your ears seems the way of it.
Sent from my iPhone using Tapatalk
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Originally Posted by AllanAllen
I am firmly in the camp of You Do You on this one.
George Barnes plays Bach/1966
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