Unit 37 · Advanced

Chord-Scale Relationships

Select note collections over changing harmony.

Lesson
Match note collections to harmonic behavior
Estimated time
150 minutes
Status
Previewing
Preview available

Complete the required prior unit before this unit can be marked complete. You may still read and try every activity.

What you will learn

Choose chord-scale options from chord quality, function, and resolution.

Why this matters: Chord-scale thinking is useful only when it serves a chord's job. The right collection explains available color, avoid notes, and target tones in context.

Before you begin

Modes · Extended chords · Guide tones · Secondary dominants · Chord-tone improvisation

The chord's job chooses the collection

A major seventh chord functioning as tonic may invite Ionian, Lydian, or a pentatonic subset depending on the desired color. A dominant chord may use Mixolydian, Lydian dominant, altered, or diminished color depending on resolution.

Start with chord tones and guide tones. Add scale color only after target tones are secure.

Progression · Key C · 4/4

Collection choices by function

TonicCmaj9Imaj9 · 1maj9
PredominantDm9ii9 · 2m9
Resolving dominantG7b9V7b9 · 5-7b9
ArrivalC6/9I6/9 · 1-6/9

Cmaj9 may use a stable major color; Dm9 points toward predominant minor color; G7b9 needs dominant tension that resolves.

1 · Model

Observe: contextual chord-scale selection

Observe stage for contextual chord-scale selection, with instructions and success criteria stated in text.

  1. Observe chord tones before collections.
  2. Hear stable tonic color versus resolving dominant color.
  3. Compare scale choice with target-note choice.

Help you can use: Complete model · Decision labels

  • Chord quality and function are named.
  • Targets land on strong beats.
  • Scale color resolves or sustains for a reason.
2 · Guided attempt

Try with prompts: contextual chord-scale selection

Try with prompts stage for contextual chord-scale selection, with instructions and success criteria stated in text.

  1. Name chord quality and function.
  2. Choose one collection and one avoid or tension note.
  3. Resolve the strongest tension.

Help you can use: Step list · Single-variable revision

  • Chord quality and function are named.
  • Targets land on strong beats.
  • Scale color resolves or sustains for a reason.
3 · Fade support

Use fewer prompts: contextual chord-scale selection

Use fewer prompts stage for contextual chord-scale selection, with instructions and success criteria stated in text.

  1. Hide the collection label and use target tones first.
  2. Add two color tones.
  3. Check whether the line follows the harmony.

Help you can use: Check after the attempt

  • Chord quality and function are named.
  • Targets land on strong beats.
  • Scale color resolves or sustains for a reason.
4 · Independent attempt

Perform independently: contextual chord-scale selection

Perform independently stage for contextual chord-scale selection, with instructions and success criteria stated in text.

  1. Choose collections for a four-chord progression.
  2. Perform a short line that targets chord tones and uses color by choice.
  3. Explain the resolution logic.

Help: Complete without prompts or a model.

  • Chord quality and function are named.
  • Targets land on strong beats.
  • Scale color resolves or sustains for a reason.

Reflect

Explain the collection choice

For each chord, name quality, function, chosen collection or subset, target tones, and one tension or avoid-note decision.

Guided practice

Build the skill in manageable steps

Exercise 1

Targets before collection

Keep scales attached to harmony.

  1. Name the chord tones.
  2. Place third or seventh on beat 1.
  3. Add two collection tones.
  4. Resolve or sustain the color by choice.
Success sounds or feels like
  • Targets are accurate.
  • Collection tones fit the chord's function.
  • The line resolves when required.
Make it smaller when
  • Use chord tones only.
Increase difficulty when
  • Use altered dominant color.
Exercise 2

Two colors, same chord

Hear color choices as decisions.

  1. Play one dominant chord.
  2. Write a Mixolydian line.
  3. Write a tenser resolving line.
  4. Explain which fits the context.
Success sounds or feels like
  • Both lines name their color.
  • The tense line resolves.
  • The chosen version matches the progression.
Make it smaller when
  • Compare major pentatonic and Ionian on tonic.
Increase difficulty when
  • Use Lydian dominant or altered color.

Common mistakes

Match the problem to a better next try

One scale shape gets used over the chords.

Likely cause: Collection labels replaced harmonic function.

Try: Name chord quality and target tones first.

Tensions sound unresolved or accidental.

Likely cause: Resolution was not planned.

Try: Track one tension into a chord tone.

Knowledge check

Explain the practice decision

1. What should be named before a chord-scale choice?
2. Why choose a tenser dominant collection?
3. What keeps a scale line attached to harmony?

Check your work

Match note collections to harmonic behavior assessment

Complete every required criterion and record the requested reflection or value.

You check off guitar-playing tasks yourself. FretGarden only grades tasks where you tap, click, or choose an answer on screen.

Review plan

Return before the idea fades

Now

Name chord quality, function, and target tones before any scale.

Next session

Map one collection choice per chord in a progression.

One week

Compare two colors on the same dominant chord.

Long term

Begin chord-scale work from guide tones and resolution behavior.

Optional extension: Write three one-bar dominant lines: plain, Lydian dominant, and altered.