Download Diatonic Triads Powerpoint

Diatonic Triads: Major Scale
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You can build a triad on every note in a
major scale just by using the notes in the
scale.
Major Scales Triads
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These chords are identified by roman
numerals OR by the name of the scale
degree the triad is built on.
Major Scales Triads
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Upper case roman numerals are used for
major chords (i.e. I, IV, V)

Lower case roman numerals are used for
minor chords (i.e. ii, iii, vi)

The seventh chord is a diminished chord
and is represented with lower case roman
numerals and a circle. (i.e. vii◦)
Roman numerals
Only three chords from the major scale are Major. They are the I
chord or the tonic, the IV chord or the subdominant, and the V
chord or the dominant.
These are called the primary chords.
Many folk, pop, and classical songs just use these three chords.
The Primary Triads
Primary Triads in C Major
What are the Primary Triads in the
examples above?

One of the most popular chord
progressions in popular music.

Uses the primary triads: I, IV, V
VARIATION:
Roman-numeral notation:
I
I
I
I
I
I
I
I
IV
IV
I
I
IV
IV
I
I
V
V
I
I
V
IV
I
I
Listen to the Primary Triads:
12 Bar Blues

Tutti Frutti by Little Richard

Batman Theme Song

Mercy by Duffy`
LISTEN to these examples. RAISE YOUR HAND the FIRST time
you hear a chord change.
12 Bar Blues Examples
Mercy Chords
The triads built just by using the notes in a minor scale also
follow a specific pattern!
Diatonic Minor Scale Triads
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1. What is a triad?
2. In a major chord, what is the interval from
the root to the third?
3. In a minor chord, what is the interval from
the root to the third?
4. In both major and minor chords, what is
the interval from the root to the fifth?
5. In an augmented chord, what is the
interval from the root to the fifth?
6.In a diminished chord what is the interval
from the root to the chord?
Triads Quiz Review
What is the roman numeral used to
represent the tonic chord in a major
scale?
 What is the roman numeral used to
represent the dominant chord in a minor
scale?
 What is the name of the chord built on the
fourth scale degree called?
 What is the bottom note of a triad called?

Triads Quiz Review

1. Find TWO songs that use the I, IV, V
chords. ONE must be in the form of the
12 bar blues.

2. Complete the triads handout as review
for your quiz on Thursday!
Homework: Scavenger Hunt