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SMGs Anyone?

Posted: Thu Apr 03, 2008 6:31 am
by Bob
First bite.

Transitioning from the ideas of AMT & CMG, the chordmode of interest is afforded its PMG status, thus instead of suggesting an alternative within the parent LC, now implies a different parent parent LC in a more or less remote relationship as determined by the circle of fifths.

In the early Coltrane examples, he takes one of his signature licks (e.g., 1235) and plays them over a chord, other than the one from which it may have been originally derived, thus creating a 'poly-chordmode' sound.

For example (see p129) 12b35 or Bb C Db F suggests a Bb-7 ~ Db Lyd [VI]. This could be played over a Bb7 ~ Ab Lyd [II].

Posted: Thu Apr 03, 2008 6:44 am
by Bob

Posted: Thu Apr 03, 2008 3:40 pm
by Bob
On the above link, I find myself in a Pythagorean trance by the fact that in the Lydian scale spelled as stacked perfect 5ths, the triad qualities are Major Major Major minor minor minor diminished. This is the only mode which on which this occurs. Hmmm.

Posted: Fri Apr 04, 2008 1:50 am
by dogbite
"On the above link, I find myself in a Pythagorean trance by the fact that in the Lydian scale spelled as stacked perfect 5ths, the triad qualities are Major Major Major minor minor minor diminished. This is the only mode which on which this occurs. Hmmm."

I(v,h) V(h) II(h) vi(v,h) iii(h) vii(h)

that's mighty sharp of you bob...

Posted: Fri Apr 04, 2008 6:50 am
by Bob
dogbite wrote: that's mighty sharp of you bob...
Arf!!

SMG is quite a haystack. Finding the needle, i.e., a 3x5 principle to guide SMG choices is a challenge (at least for one who is challenged). Well, you get the point.

Posted: Fri Apr 04, 2008 7:17 am
by chespernevins
Db:
I(v,h) V(h) II(h) vi(v,h) iii(h) vii(h)
Never looked at it quite this way. Interesting! There are a lot of implications here, aren't there? (I feel so slow sometimes!)

Very nice visualization tool.

Thanks Bob!

Posted: Fri Apr 04, 2008 8:53 am
by strachs
That circle of fifths diagram is cool. Did you also notice WHICH majors and minors they are?

They are the major triads of a PMG and it's CMG - related keys, plus their relative minors.

Posted: Fri Apr 04, 2008 9:20 am
by Bob
strachs wrote:That circle of fifths diagram is cool. Did you also notice WHICH majors and minors they are?

They are the major triads of a PMG and it's CMG - related keys, plus their relative minors.
Si!

Posted: Fri Apr 04, 2008 9:21 am
by Bob
dogbite wrote:
I(v,h) V(h) II(h) vi(v,h) iii(h) vii(h)...
Why is II(h) and not II(v,h)?

Posted: Fri Apr 04, 2008 9:22 am
by chespernevins
Strachs,

Yeah, that's what I took away from the "v" and "h" designations in Dogbite's example.

You're right to explicitly point it out for the sake of better communication.

Posted: Fri Apr 04, 2008 12:35 pm
by dogbite
dogbite:

"I(v,h) V(h) II(h) vi(v,h) iii(h) vii(h)"

Bob:

"Why is II(h) and not II(v,h)?"

you are of course correct. i was thinking major (I) and minor (VI) as modal genres rather than the II or "seventh" modal genre, but i think the point is valid whether or not the designation of [v,h] is applied to the II...

db

Posted: Fri Apr 04, 2008 12:36 pm
by strachs
Not sure if this helps....

One way that a Secondary, but not neccessarily Alternate Modal Genre can be arrived at, is by finding two chordmodes that can contain the same chord. For example, the Dm+7 chord is found as a four-note chord on mode VI of F LA, and on mode I of D LD (although Russell calls it "diminished major seventh" when found in the LD scale - not sure where that name comes from).

That being the case, that chord can be placed in either tonal environment. At the moment, I can't recall why this does not qualify as an AMG, but the term SMG, being broader, should allow for this substitution.

I havn't looked too closeley for other such possiblities, but when I do, I'm going to be using a chart like this to spot it:

I II III IV+ V VI VII
F G A B C D E
A B C D E F G
C D E F G A B
E F G A B C D
G A B C D E F
B C D E F G A
D E F G A B C

I II III IV+ V+ VI VII
F G A B C# D E
A B C# D E F G
C# D E F G A B
E F G A B C# D
G A B C# D E F
B C# D E F G A
D E F G A B C#

I II III- IV+ V VI VII
F G Ab B C D E
Ab B C D E F G
C D E F G Ab B
E F G Ab B C D
G Ab B C D E F
B C D E F G Ab
D E F G Ab B C

I II III IV+ V VI VII-
F G A B C D Eb
A B C D Eb F G
C D Eb F G A B
Eb F G A B C D
G A B C D Eb F
B C D Eb F G A
D Eb F G A B C

I II III IV+ V+ VII-
F G A B C# Eb
A B C# Eb F G
C# Eb F G A B
Eb F G A B C#
G A B C# Eb F
B C# Eb F G A
C# Eb F G A B

Horizontally, the chart lists the modal genres of a scale in seconds. Vertically, those same notes are listed in thirds, to make the chord degrees more visible. The first set is Lydian, the second is Lydian Augmented, the third Lydian Diminished, etc.

I would have pasted the entire chart into the post, but then I loose formatting. Hope this gives you the general idea of how I'm examining modes of the principal scales...

Posted: Fri Apr 04, 2008 12:42 pm
by dogbite
strachs:

"That circle of fifths diagram is cool. Did you also notice WHICH majors and minors they are?

They are the major triads of a PMG and it's CMG - related keys, plus their relative minors."

yup. note also the intentional pun, "that's mighty *sharp* of you bob"

F C G Dm Am Em

each triad is produced by either a mode I (F C G) or a mode VI (Dm Am Em) lydian scale in a *sharp* direction, further demonstrating the ladder of fifths:

B
E
A
D
G
C
F

db

Posted: Fri Apr 04, 2008 12:51 pm
by strachs
Didnt' catch that originally, no. But yep, there it is, in all it's funnyness.

Posted: Fri Apr 04, 2008 12:59 pm
by strachs
Again on that diagram Bob posted....

Wouldn't it be cool if someone could make such a "interactive" slide-rule type tool to display the modes of a Principal Scale in all the keys, and how they bend and twist when morphed into the more outgoing scales?

If anyone knows the web develper who created that cycle of fifths page......