Harmony 3

Week 3

Review – Chord Scales

• Diatonic Chords use diatonic chord scales

Chord Name Scale

Imaj7 Ionian 1 T9 3 S4 5 T13 7 1

IIm7 Dorian 1 T9 b3 T11 5 S6 b7 1

IIIm7 Phrygian 1 Sb2 b3 T11 5 Sb6 b7 1

IVmaj7 Lydian 1 T9 3 T#11 5 T13 7 1

V7 Mixolydian 1 T9 3 S4 5 T13 b7 1

VIm7 Aolian 1 T9 b3 T11 5 Sb6 b7 1

VIm7(b5) Locrian 1 Sb2 b3 T11 b5 Tb13 b7 1

• Secondary dominants use diatonic chord scales with accidentals for the chord tones

Extended Dominants

• Extended dominants use mixolydian chord scales (the same as V7/V)

• The first chord in an extended dominant pattern should use mixolydian without alterations

• Once the pattern has begun any subsequent extended dominant scale may be mixolyidan with alterations.

• As a general rule, all dominant chords with expected resolution down a perfect fifth use a mixolydian scale (with or without alterations).

Chord Name Scale

V7/II Mixo b13 1 T9 3 S4 (5 Tb13) b7 1

V7/III Mixo b9 (opt#9) b13

1 Tb9 T#9 3 S4 (5 Tb13) b7 1

V7/IV Mixo 1 T9 3 S4 5 T13 b7 1

V7/V Mixo 1 T9 3 S4 5 T13 b7 1

V7/IV Mixo b9 (opt#9) b13

1 Tb9 T#9 3 S4 (5 Tb13) b7 1

Extended Dominants

Mixo 1 T9 3 S4 5 T13 b7 1

ACTIVITY

• Complete Worksheets 2 and 3• If you have completed these, complete the

supplementary chord scales worksheet.

Related IIm7 chords

• Related IIm7 chords use dorian chord scales (the same as IIm7)

• Avoid notes are not available harmonic tensions but are available as melodic approach notes.

• Avoid notes are non-chord tones a half step above a chord tone except:– Avoid the 6th degree for IIm7 chords– On dominant chords, b9 and/or b13 are available,

but b13 and 5 should not be used together.

Other Major Key Chord Scales• If the IV chord is preceded by its dominant,

an ionian scale is used• If the IV chord is followed by the VIm, an

ionian scale is used• Non-diatonically rooted major chords use

lydian• Modal interchange chords borrowed from

parallel minor keys use the following chord scales (in a major key context):

Modal Interchange

• Both Im7 and IVm7 chord scales are dorian when the chords appear in a major key context

• Dorian is an appropriate chord scale for either IVm7 or IVm6

• IVm6 and IVm(maj7) may use the melodic minor scale because it contains both and maj7 and a 6

• A Vm7 chord uses a dorian chord scale• IIm7(b5) uses either locrian or locrian ♮9,

depending on the context.

Chord Name ScalebIImaj7bIIImaj7 bVImaj7 bVIImaj7

Lydian 1 T9 3 T#11 5 T13 7 1

Im7 Dorian 1 T9 b3 T11 5 S6 b7 1IVm7 Dorian 1 T9 b3 T11 5 S6 b7 1IVm6 Dorian 1 T9 b3 T11 5 S6 b7 1IVm(maj7) Melodic

Minor1 T9 b3 T11 5 T13 7 1

Vm7 Dorian 1 T9 b3 T11 5 S6 b7 1IIm7(b5) Locrian 1 Sb2 b3 T11 b5 Tb13 b7 1

ACTIVITY

• Listen to the audio track demonstrating the chords and chord scales from the chord scales worksheet

• Download the 80bpm backing track off Moodle

• Develop a melody for the piece using the chord scales you have written

• Record your session using Logic Pro