h1 week 6 1701
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Chord Construction - Triads
Week 6
Learning Outcomes
• Be able to construct diatonic major key triads• Know the interval relationships in major,
minor, augmented, diminished and suspended 4th triads
• Be able to provide correct chord symbols for major, minor, augmented, diminished and sus4 triads
• Construct triads
Worksheets Covered
• Worksheet 12
Chords
• Three or more notes played together form a chord
• We describe chords using the same words we describe intervals with: major, minor, augmented, diminished
• Three note chords are called triads• The basic building block for all chord types is
the interval of a 3rd
Diatonic chords
1. Write out the C major scale2. Now go through the scale, and place notes a
3rd above on top of each scale degree 3. Now go through the scale and and place
notes a 3rd above the previous notes
Use notes only diatonic to the key of C major
• The triads you have just created are the diatonic triads of C major
• Diatonic chords for every key are created this way – by stacking diatonic notes of the scale in thirds
• Diatonic means notes exclusive to the key
Diatonic Triads
• The diatonic triads in the key contain 3 of the 4 triadic chord structures: – Major– Minor– Diminished
• We can tell what kind of chord structure it is by analyzing the intervals in the chord
Major triads
• Chords with an interval of a major 3rd from the root (note name of the chord) to the middle note
• A perfect 5th from the root to the top note
G Perfect 5thE Major 3rdC
• What are the notes of the F chord in C?• What are the intervals between the root and
middle note?• What are the intervals between the root and
top note?
• What are the notes of the G chord in C?• What are the intervals between the root and
middle note?• What are the intervals between the root and
top note?
• The chord symbol for major is either– C =C major triad– C major– Cmaj
• At Wintec we use a stand alone letter name to abbreviate major triads, ie. A = A major triad
Minor Triads
• Chords with an interval of a minor 3rd between the root and middle note
• And a perfect 5th between the root and top note
A Perfect 5thF Minor 3rdD
• What are the notes of the E chord in C?• What are the intervals between the root and
middle note?• What are the intervals between the root and
top note?
• What are the notes of the A chord in C?• What are the intervals between the root and
middle note?• What are the intervals between the root and
top note?
• The chord symbol for minor is either– A min– Am– A-
At Wintec, we use Am to abbreviate A minor triad
Diminished Triads
• Minor 3rd from root to middle note• Diminished 5th from root to middle note
F Diminished 5thD Minor 3rdB
• The chord symbol for diminished is either – dim– °
I.e. Bdim or B°• At Wintec we use B° to abbreviate a B
diminished triad
Diatonic Major Key Chords
Augmented Triads
• Major 3rd from root to middle• Augmented 5th from root to top
G♯ Augmented 5thE Major 3rdC
• The augmented triad is not diatonic to a major key
• The chord symbol for augmented is either:– aug – +
• At Wintec we use C+ to abbreviate a C augmented triad
Sus 4 Triads
• Perfect 4th from root to middle• Perfect 5th from root to top
G Perfect 5thF Perfect 4thC
• A suspended 4th chord is a very common chord
• It doesn’t fit the normal pattern of stacked thirds
• A suspended 4th chord is a triad in which the 4th degree replaces the 3rd degree
• The chord symbol for a suspended 4th chord is– Fsus4
Worksheet 12
• Begin Worksheet 12
Next Week:
• Review• Quiz 1 – moved to Week 8• Cheat Sheet – single sided A4 – hand written.
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