
Visual Composer/guitarist
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Joined: 11-November 05
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Member Number: 317
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next lesson is about harmonic analysis of a Song form:
for this we have to make sure we know how to deal with modulation and/or secondary dominants, parallel harmonization..
a quick overview:
Secondary Dominants:
Dominant chords (that means a major triad with a b7) usually resolve to the tonic key... for example G7 resolves to C major "most of the times"...
It is also very common that it could resolve to C minor (being a harmonic or melodic scale)...
how do we know if a G chord is major or minor in the key of C?
well... if it is G major that means it would have B natural... therefor.. in the key of C harmonic minor or melodic minor we have a B natural...
So.. G7 could resolve either way to C major or minor...
GREAT!
Secondary Dominants:
Secondary Dominants are Dominant chords (major triad with b7) that resolve either to major or minor chords.. BUT, they don't belong to the original key.. they are only a "transition" for leading into a chord function...
for example:
in the key of C major... we are hanging out in the key, playing a bunch of notes..
but lets say we play the second degree of the scale..
that would be D minor7.. right?..
D+F+A+C = D min7
So... lets "create" an auxiliary dominant chord...
Logically.. since G7 is the fifth degree of C major.. then guess what?.... We need to find the 5th degree of D minor....
A7 is the dominant chord (major triad b7 chord that happens to be the 5th chord starting from letter D)...
so... for that "measure or BAR" we can outline either the scale, arpeggio or chord comming from A7 just before we resolve to D minor...
why can't we resolve to D major?... well, F# is not in the key of C.. and as i said before, dominant chords can resolve either to major or minor... although D minor in the key of C does not have a leading tone.. it is still treated as a minor chord for that ammount of time..
so... we can have Dominant chords EVERYWHERE EXCEPT the 7th degree....
why??
because the seventh degree of a major scale has the b5 alteration, also happens to be an altered chord with a b9..
so a dominant chord resolving to a triad that is already meant to resolve up a step to C major doesnt sound too good...
although some people do it.. there are other theories that also make a lot of sense...
so.. lets take a progression:
C maj7, D min7, E min7, F maj7, G7, A min7, B min7b5, C maj7
it goes up the scale, but what if we add the secondary dominants on each of the chords??
it would sound like this:
C maj7, A7 Dm7, B7 Em7, C7 Fmaj7, D7 G7, E7 Am7, B min7b5, C Maj7
notice how B min7b5 already resolves to C major so no need for another resolution...
now... lets talk about the famous II-V7-I progression
II-V7-I progression
the name says it all... instead of G7 to Cmaj7 we do Dmin7 (second chord of C), to G7 (5th chord of C) to C maj
well.. same can be applied to all those chords
Em7 A7 to Dm7
F#m7 B7 to Em7
and you know the rest...
why the 2nd degree and not the 3rd or 6th?
theory 1:
since the second degree of a major scale happens to be the fifth degree of the Fifth chord (Dm7 is the 5th letter note of G7).. it gives that motion of "fifth to first" even tough it is not a major chord...
Theory 2
the second degree (in the key of C is D min) has all the chord tones that belong to the fifth degree (in the key of C is G)
so G7 = G, B, D, F
Dm7 = D, F, A, C
A happens to be the 9th or second note of G, which already wants to move up to B (third note of G) or G (first note)...
both notes B and G are extremely important in G7.. they outline the chord basically... and having an "A" is almost having a G7 chord because it moves to either chord tone in the chord... up to B, down to G..
C happens to be the 4th degree of G... it is also a strong chord tone that wants to resolve to B (the third of G) and D (the fifth of G)
so... Dmin7 has all the alterations and resolutions that G7 is expecting to have..
therefor... use it.
Modulation
Man, i would give a whole webpage about modulation.. but for now i will only talk about it..
it is mainly going to another key using a chord from the original key..
this is only "one" way of modulating but there are several and I will cover them later...
so.. in the key of C.. we have Emin7 lets talk about this chord... Emin7 also exists in the key of G... right? so this is a chord that can take us to a different key
example:
Cmaj7, Dmin7, G7, Cmaj7, Dmin, Emin, F#min7b5, Gmaj7
see?
so, sometimes in jazz pieces or songs we see all this chords that dont belong to a key..
they are either a secondary dominant chord (major b7 chord that only works for that measure to resolve to a chord degree in the key)
a modulation (a chord progression that does not belong to a key and colours a new tonal center)
or parallel chords...
Parallel Chords
they are a chord that exists on a different dimention with the same letter name
example C major is parallel to C minor... G7 is parallel to Gmin7
so if we play C minor and Gmin7 we are in the key of?: AbMaj
that means that there also exists parallel keys like AbMaj being parallel to C minor if we use only those 2 chords.. it depends on how you approach it.. but we are not getting into that yet..
i just want you to know about them..
So, that is it... lets get to work..
Assignment
I have attached a PDF file of a Jazz Standard song.. you will first write each chord on a separated Paper... below or on top of each chord write the function..
analyze!!! is the chord a secondary dominant.. did it modulate?,
if you find a weird case in which there is no modulation and no secondary dominant but a chord that just doesnt fit just name it PARALLEL
example :
C maj, Dm7, F#m, G7, Cmaj
that seems to be in the key of C major.. that F #min does not belong anywhere... so, we will call it a parallel chord.. not necessary parallel to F#maj because it is not in the key of C either.. but you will see later on why.. for now just do the 3 things covered today...
after you have done this, write a melodic phrase using eight notes, just as we did in the first assignments.. and be creative but also be aware of the key, secondary dominants, and modulation..
have fun..
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“If a composer could say what he had to say in words he would not bother trying to say it in music.” -Gustav Mahler
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