Triads Kostka Payne Chapter 4 Introduction Most chords in tonal music are made up only of notes from the scale on which the passage is based That is if a passage is in G major most of the chords contain only notes found in the G major scale ID: 264426
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Slide1
Diatonic Triads
Kostka
/Payne – Chapter 4Slide2
Introduction
Most chords in tonal music are made up only of notes from the scale on which the passage is based. That is, if a passage is in G major, most of the chords contain only notes found in the G major scale.
These are called
DIATONIC CHORDS
. Slide3
Diatonic Triads in Major
We start with a Major Scale …Slide4
Diatonic Triads in Major
Then we create triads using only the notes of the scale.Slide5
Next we analyze the Qualities. . .Slide6Slide7Slide8Slide9Slide10Slide11Slide12Slide13Slide14
Roman Numerals
To distinguish the triads built on the various scale degrees from the scale degrees themselves, we use roman numerals instead of
arabic
numerals. (for example, V instead of 5).
The triad type is indicated by the form of the roman numeral itself. (Uppercase or Lowercase)Slide15
Roman NumeralsSlide16
Roman NumeralsSlide17
Roman NumeralsSlide18
Roman NumeralsSlide19
Roman NumeralsSlide20
Roman NumeralsSlide21
Roman NumeralsSlide22
Roman NumeralsSlide23
Roman NumeralsSlide24
Roman Numerals
You MUST memorize these.Slide25
Minor Triads
Remember that we have
three
forms of the minor scale.
This creates multiple possibilities for diatonic triads in minor.
This is a result of
or
6 and 7 scale degrees. Slide26
Minor Triads
Notice that the roots of the circled triads above all belong to the
harmonic minor
scale.
In fact, all notes of the circled triads belong to the harmonic minor scale.
(except the 5
th
of the III chord.)Slide27
Minor Triads
You MUST memorize the circled chords.Slide28
Diatonic Seventh Chords in Major
The chords on each scale degree in major can include a 7
th
above the root.
The roman numeral system for seventh chords is similar to that of triads.Slide29
Seveventh
Chords in Major
You MUST memorize these.Slide30
Seventh Chords in Minor
You MUST memorize these
too
.Slide31
T
Summary
You MUST memorize the chart above.
Major I ii iii IV V vi vii
°
Minor
i
ii
°
III iv V VI vii
°
Major I
M7
ii
7
iii
7
IV
M7
V
7
vi
7
vii°
7
Minor
i
7
ii
°
7
III
M7
iv
7
V
7
VI
M7
vii°
7
Triads
Seventh Chords