Published:
2012-04-06
Updated:
2024-06-08
Learning Ukulele with Curt
Harmonic Analysis - Scale Selection
A Harmonic Analysis is then used to make vertical and horizontal scale selection for improvisation and chord substitution.
Author(s): Curt Sheller Publisher: Curt Sheller Publications Code: MLRMAe-10
Main Category: Theory Main Instrument: Any
Subjects: Chords
2024-06-08
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A Harmonic Analysis is then used to make vertical and horizontal scale selection for improvisation and chord substitution.
Once a harmonic analysis has been completed then scale selections can be made. These scale selections can be either vertical and horizontal choices.
Vertical Scale Choice
This is a scale per chord approach. When a new chord is encountered the scale is changed based on the chart below. This is a basic scale selection approach. Additional scales can be played against these chords using the same principles that are used with chord substitution (see the Substitution Principles chapter).
Chord Type
Basic Scales
(Starting on Root)
maj
maj7
Ionian(Major)
Lydian (Major)
Major Pentatonic
minor
m7
Dorian
Aeolian (Natural Minor)
Harmonic Minor
Minor Pentatonic
Additional Vertical Scale Choices below .
More Harmonic Analysis - Scale Selection
content below, continue exploring...
More Vertical Scale Choices
minor/major 7 (mL7)
Tonic Minor
m6
Dorian
Minor Pentatonic
7
Mixolydian (Dominant)
Major Pentatonic
dim
dim 7
Diminished
aug
aug 7
Whole Tone
Horizontal Scale Choices
Scale choices can be made based on the overall tonality of a progression or portions of a progression using horizontal scale choices. The scale will stay in effect until the analysis requires a different scale.
Here are the scale choices applied to the Six Harmonic Principles.
Full Diatonic Chords
Full Diatonic Major
- Use the Major scale of the I chord
Full Diatonic Minor
- Use the Natural Minor scale of the I chord on I and III chords
- Use the Harmonic Minor scale of the I chord on V and VII chords
- Use the Natural Minor scale or Harmonic Minor scale of the I chord on II , IV , and VI chords
Sample Scale Choices for II V of a II V I Minor
- Harmonic Minor of the I chord traditional sound
- Locrian of the II for a more contemporary sound
Partial Diatonic
Use the Vertical Scale Choice approach.
- For Seventh chords resolving up a perfect fourth (or down a perfect fifth) to a major chord type use a Mixolydian scale.
- For Seventh chords resolving up a perfect fourth (or down a perfect fifth) to a minor chord type use a Mixolydian -2 -6 scale.
Internal Modulation
- Use a Full Diatonic or Partial Diatonic solutions.
Unresolved
- Use a Full Diatonic or Partial Diatonic solutions.
Cycle
- Use a Full Diatonic or Partial Diatonic solutions.
Chromatic
- Use a Full Diatonic or Partial Diatonic solutions.
- For Seventh chords functioning as a bII7 , bIII7 , bV7 , bVI7 , or bVII7 use a Mixolydian +4 scale.
Alternate Scale Choices
Alternate scale choice should be based on the same principles as chord substitution.
The Lydian Scale Uses vs. Ionian Scale
If a major chord is not in a full or partial diatonic progression then the Lydian scale is the better vertical scale choice.