Music 1301: Triads and Seventh Chords
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50 Terms
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Chord
a combination of 3 or more pitches
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Triad
a special kind of chord that is a stack of three pitches in superimposed thirds; they are identified by their root, and has a root, third, and fifth.
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Root
the bottom note of the stack of thirds
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Major Triad
Major 3rd and a minor 3rd superimposed on top
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Minor Triad
minor 3rd and a Major 3rd superimposed on top
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Diminished Triad
minor 3rd and a minor 3rd superimposed on top
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Augmented Triad
Major 3rd and a Major 3rd superimposed on top
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In a Major key, along its scale, the uppercase Roman numerals are…
Major chords
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In a Major key, along its scale, the lowercase Roman numerals are…
minor chords
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In a Major key, along its scale, lowercase Roman numerals with a degree symbol (°) are…
diminished triads
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In a Major key, the I place in the scale is the…
tonic
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In a Major key, the ii place in the scale is the…
supertonic
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In a Major key, the iii place in the scale is the…
mediant
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In a Major key, the IV place in the scale is the…
subdominant
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In a Major key, the V place in the scale is the…
dominant
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In a Major key, the vi place in the scale is the…
submediant
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In a Major key, the vii place in the scale is the…
leading tone
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Lead Sheet Symbols
a way for a musician to quickly know what chord is in the measure; always in the uppercase, and identified by their root.
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White Note Triad Group 1: Major Triads
C, F, G
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White Note Triad Group 2: Minor Triads
D, E, A
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White Note Triad Group 3: Diminished Triad
B
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All major keys have…
the same properties concerning the qualities of the chords along the scale.
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In a minor key, the i place in the scale is…
the tonic
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In a minor key, the ii° place in the scale is…
the supertonic
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In a minor key, the III place in the scale is…
the mediant
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In a minor key, the iv place in the scale is…
the subdominant
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In a minor key, the V place in the scale is…
the dominant
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In a minor key, the VI place in the scale is…
the submediant
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In a minor key, the vii° place in the scale is…
the leading tone
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Scalar Variants
depending on the context, they may allow notes from the chord to change, even in the root in one instance.
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Triad inversions
keep the same members of the chord, but the lowest note becomes a different member of the chord.
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The Bass
the lowest note
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In slash notation, the slash means…
over
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Numbers appearing beside the Roman numerals show,,
the absolute intervals of the pitches present above the bass.
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Harmonic Rhythm
where chords often change at a regular rate in a piece.
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Texture
refers to the way the music is written, in terms of rhythm, register, and instrumentation.
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Major Seventh Chord (Maj⁷)
a Major triad on bottom with a Major 3rd stacked on top
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Major Minor Seventh Chord (Dominant) (Mm⁷)
a Major triad on bottom with a minor 3rd stacked on top
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Minor Seventh Chord (m⁷)
a minor triad on bottom with a minor 3rd stacked on top
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Half-Diminished Seventh Chord (∅7)
a diminished triad on bottom with a Major 3rd stacked on top
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Diminished Seventh Chord (°7)
a diminished triad on bottom with a minor 3rd stacked on top
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When building a dominant seventh chord in a Major key, put a 7th chord on the…
5th scale degree.
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When building a dominant seventh chord in a minor key, create a leading tone by raising the…
3rd of the chord.
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The Root Position
the first position a seventh chord can appear in
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The First Inversion
the second position a seventh chord can appear in
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The Second Inversion
the third position a seventh chord can appear in
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The Third Inversion
the fourth position a seventh chord can appear in
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Inversion Symbols
help musicians understand how far each member of the seventh chord is above the note in the bass.
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In seventh chords, the root…
is always on top.
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Note 
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