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So What Chord Quartal Harmony Up to this point, we have discussed building chords up in intervals of 3rds (tertian harmony). But it is also possible to build chords up in intervals of 4ths. This is called Quartal Harmony. The So What Chord is a speci c type of Quartal Chord (we will discuss Quartal Chords (http://www.thejazzpianosite.com/jazz-piano-lessons/jazz-chord-voicings/quartal-voicings/) in more detail in an upcoming lesson). The So What Chord Voicing is a classic and widely used Modern Jazz piano voicing. This chord voicing derives its name from the song So What from Mile Davis’ Kind of Blue album. In this song the pianist, Bill Evans, plays a particular chord voicing which has become known as the So What Chord. Quartal chord voicings: Sound very modern; Are very ambiguous (there is no clear tonal centre [root note] and each voicing can be many di erent chords); Because they are ambiguous, they do not have the same need to resolve to any particular chord – they just oat there as stand alone entities.
Chords built in 4ths are analysed in the same way as regular chords built in 3rds. We look at all the notes that comprise them and gure out an appropriate chord name. This is arguably unsuitable, because chords built in 4ths sound and function very di erently to chords built in 3rds. But unfortunately, standard music theory is what everyone knows and uses.
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So What Chord
OPEN
The So What Chord is a two handed chord voicing made up of 5 notes. It is built out of three stacked Perfect 4ths with a Major 3rd on top. So, for example, the D So What Chord is:
Left Hand: D-G Right Hand: C-F-A
Chord Ambiguity Because of the way the So What Chord is constructed (out of 4ths rather than 3rds), it is rather ambiguous and can be numerous chords at once, depending on the context. Some of these chords are listed below. So What Chord
Possible Chords
Notes
D So What Chord
Dm11
DFACEG
B♭Maj13
B♭ D F A C ( ) G
E♭Maj13#11
E♭ G B♭ D F A C
F69
FACDG
G9sus
GCDFA
D-G C-F-A
Because these chords are built in 4ths, they have a slightly Suspended Chord (http://www.thejazzpianosite.com/jazz-piano-lessons/jazz-chords/suspendedchords/) sound. This also means that they do not have the same need to resolve to another chord (like a G7 feels like it needs to resolve to CMaj7).
Chord Progressions The So What Chord Voicing can be used in a standard ‘tonal’ chord progression (going around a Circle Progression (http://www.thejazzpianosite.com/jazz-piano-lessons/jazz-chordprogressions/circle-of- fths/) or II-V-I (http://www.thejazzpianosite.com/jazz-piano-lessons/jazz-
chord-progressions/ii-v-functionality/)) or a ‘modal’ chord progression (moving in steps). We will learn much more about tonal and modal harmony (http://www.thejazzpianosite.com/jazz-piano-
lessons/modern-jazz-theory/tonal-harmony-vs-modal-harmony/) in future lessons.
Tonal Chord Progression You can use the So What Chord in a II-V-I chord progression, as shown below. II-V-I in C Basic Chord Progression
Dm7
G7
CMaj7
Variation #1
Dm11
G9sus
CMaj13
D So What Voicing
D So What Voicing
E So What Voicing
D-G C-F-A
D-G C-F-A
E-A D-G-B
Dm11
G9
CMaj13#11
D So What Voicing
Open
B So What Voicing
D-G C-F-A
D-G B-F-A
B-E A-D-F#
Variation #2
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OPEN
Modal Chord Progression Because the So What Chord Voicing is ambiguous and doesn’t need to resolve, you can move it around the piano however you like. Any chord can move to any other chord. You can create some really smooth and nice sounding progressions by moving the So What Chord up and down in steps (as is often done in Modal Jazz (http://www.thejazzpianosite.com/jazz-piano-lessons/modern-jazztheory/modal-jazz/)) or in small jumps. This can be done in two ways: Diatonic – Only using the notes within a key (Note: One of the 4ths in a diatonic key will be a ‘diminished 4th’ or tritone, like that between B and F in the key of C Major); Parallel Motion (Parallelism) – Keeping the true/classic So What shape.
Root
Parallel (True So
Diatonic (in key of C
Possible Chords (for
Note
What)
Major)
Diatonic)
C
C-F B♭-E♭-G
C-F B-E-G
Gsus
D
D-G C-F-A
D-G C-F-A
Dm11 B♭Maj13 E♭Maj13#11 F69 G9sus
E
E-A D-G-B
E-A D-G-B
Em11 CMaj13 FMaj13#11 G69 A9sus
F
F-B♭ E♭-A♭-C
F-B E-A-C
G7sus FMaj7#11
G
G-C F-B♭-D
G-C F-B-D
G7sus FMaj#11
Root
Parallel (True So
Diatonic (in key of C
Possible Chords (for
Note
What)
Major)
Diatonic)
A
A-D G-C-E
A-D G-C-E
Am11
FMaj13 B♭Maj13#11 C69 D9sus B
B-E A-D-F#
B-E A-D-F
G13 Bø7 Dm69 FMaj7#11
So What Inversions Like any chord, So What Chords also have inversions. All of these inversions can be used if you need a di erent bass note or melody note on top. Notice that the 4th inversion of a So What chord is a standard Quartal Chord (which, again, we will discuss in an upcoming lesson). So What Chord Inversions Root Position
D-G C-F-A
1st Inversion
G-C F-A-D
2nd Inversion
C-F A-D-G
3rd Inversion
F-A D-G-C
4th Inversion
A-D G-C-F
(Quartal Voicing)
So What Alterations You can also alter the interval between your left hand and right hand to create a new chord and a more dissonant sound. Below are a few examples of this. So What Chord
Notes
Possible Chord
Classic So What
D-G C-F-A
Dm11
LH + 2 semitones
E-A C-F-A
Dm9 or FMaj7
LH + 3 semitones
F-B♭ C-F-A
B♭Maj9
LH + 4 semitones
F#-B C-F-A
?
Jazz Piano History Quartal harmony was rst used extensively by McCoy Tyner in the 1960’s. And because Quartal chords are a bit ambiguous, they are more conducive to Modal harmony (again, we will discuss Modal Jazz in a future lesson). Today, playing chords built in 3rds is considered a bit old-fashioned and simplistic. Instead, Modern Jazz Pianists prefer to play chord built in 4ths.
Have a Listen to So What ~ Miles Davis
Peresina ~ McCoy Tyner Matrix ~ Chick Corea
Jazz Piano Chord Voicings - So What Chord
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