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100% HertzDevil
Upper Structure Triad
 

::|CONTENTS

  1. Tensions
  2. Major 7th Chord
  3. Minor 7th Chord
  4. Dominant 7th Chord
  5. Half-Diminished 7th Chord
  6. Fully Diminished 7th Chord
  7. Dominant 7th Suspended 4th Chord
  8. Dominant 7th Flat 5th Chord
  9. Augmented 7th Chord
  10. Augmented Major 7th Chord
  11. Minor Major 7th Chord
  12. Major 6th Chord
  13. Minor 6th Chord
  14. See Also
An upper structure triad is simply a fancy name for placing a triad on top of another seventh chord to create complex chords with relatively simple voicings. They are especially handy for chiptune because these triads can be simply represented by a separate arpeggio.

This page lists most possibilities that observe the usual chord formation rules from jazz. Each chord has five columns:

- UST: The Roman numeral of the upper structure triad, relative to the chord's root.
- Chord: The chord's canonical spelling. Triads producing the same extended chord are grouped together.
- Notes: All notes of the chord on C, from the lowest to highest.
- Base: The lowest note of the triad, relative to the chord's root. 0 means that one of the notes coincides with the root.
- Arp: The arpeggio parameter that produces the notes of the triad. It is possibly inverted so that the arp doesn't cross an octave.

Check this out if there are terms that you don't understand!

(TODO: maybe manually add the ones that use both #5/b5 or #9/b9?)



Tensions



Chord
♭9
9
♯9
10
11
♯11
♭13
13


M7
.
X
X
.
.
X
.
X


m7
X
X
.
.
X
X
.
X


7
X
X
X
.
.
X
X
X


m7(♭5)
X
X
.
.
X
.
X
X


o7
X
X
.
.
X
.
X
.


7sus4
X
X
.
X
.
.
.
X


7(♭5)
X
X
X
.
.
.
X
X


7(♯5)
X
X
X
.
.
X
.
.


M7(♯5)
.
X
X
.
.
X
.
.


mM7
.
X
.
.
X
X
.
X


6
X
X
X
.
.
X
.
.


m6
X
X
.
.
X
X
.
.




Major 7th Chord



Available tensions: 9, ♯9, ♯11, 13

UST
Chord
Notes
Base
Arp


vi
M7(13)
C
E
G
B
A
0
049


♯ivo
M7(♯11,13)
C
E
G
B
F♯
A
0
069


V
M9
C
E
G
B
D
2
059


vii
M9(♯11)
C
E
G
B
D
F♯
2
049


II
M13(♯11)
C
E
G
B
D
F♯
A
2
047


i
V+
VII+
♭III+
M7(♯9)
C
E
G
B
D♯
0
3
3
3
037
048
048
048





vio
M7(♯9,13)
C
E
G
B
D♯
A
0
039


io
VII
M7(♯9,♯11)
C
E
G
B
D♯
F♯
0
3
036
038



♯iio
M13(♯9,♯11)
C
E
G
B
D♯
F♯
A
3
036




Minor 7th Chord



Available tensions: ♭9, 9, 11, ♯11, 13

UST
Chord
Notes
Base
Arp


vio
m7(13)
C
E♭
G
B♭
A
0
039


IV
m7(11,13)
C
E♭
G
B♭
F
A
0
059


io
♭iii
m7(♯11)
C
E♭
G
B♭
F♯
0
3
036
037



♯ivo
♯iio
m7(♯11,13)
C
E♭
G
B♭
F♯
A
0
3
069
036



vo
m7(♭9)
C
E♭
G
B♭
D♭
1
069


♭vii
m11(♭9)
C
E♭
G
B♭
D♭
F
1
049


IV+
VI+
♭II+
m13(♭9)
C
E♭
G
B♭
D♭
F
A
1
1
1
048
048
048




♭V
m7(♭9,♯11)
C
E♭
G
B♭
D♭
F♯
1
059


♭v
m13(♭9,♯11)
C
E♭
G
B♭
D♭
F♯
A
1
058


v
m9
C
E♭
G
B♭
D
2
058


♭VII
m11
C
E♭
G
B♭
D
F
2
038


ii
m13
C
E♭
G
B♭
D
F
A
2
037


II+
♭V+
♭VII+
m9(♯11)
C
E♭
G
B♭
D
F♯
2
2
2
048
048
048




II
m13(♯11)
C
E♭
G
B♭
D
F♯
A
2
047




Dominant 7th Chord



Available tensions: ♭9, 9, ♯9, ♯11, ♭13, 13

UST
Chord
Notes
Base
Arp


I+
III+
♭VI+
7(♭13)
C
E
G
B♭
A♭
0
0
0
048
048
048




vi
7(13)
C
E
G
B♭
A
0
049


♯ivo
7(♯11,13)
C
E
G
B♭
F♯
A
0
069


♯io
♯vio
vo
7(♭9)
C
E
G
B♭
D♭
1
1
1
036
039
069




♭ii
7(♭9,♭13)
C
E
G
B♭
D♭
A♭
1
037


VI
7(♭9,13)
C
E
G
B♭
D♭
A
1
038


♭V
7(♭9,♯11)
C
E
G
B♭
D♭
F♯
1
059


♭v
13(♭9,♯11)
C
E
G
B♭
D♭
F♯
A
1
058


v
9
C
E
G
B♭
D
2
058


II+
♭V+
♭VII+
9(♯11)
C
E
G
B♭
D
F♯
2
2
2
048
048
048




II
13(♯11)
C
E
G
B♭
D
F♯
A
2
047


i
♭III
7(♯9)
C
E
G
B♭
D♯
0
3
037
047



♭VI
7(♯9,♭13)
C
E
G
B♭
D♯
A♭
0
038


vio
7(♯9,13)
C
E
G
B♭
D♯
A
0
039


io
♭iii
7(♯9,♯11)
C
E
G
B♭
D♯
F♯
0
3
036
037



♯iio
13(♯9,♯11)
C
E
G
B♭
D♯
F♯
A
3
036




Half-Diminished 7th Chord



Available tensions: ♭9, 9, 11, ♭13, 13

UST
Chord
Notes
Base
Arp


♭VI
m7(♭5,♭13)
C
E♭
G♭
B♭
A♭
0
038


vio
♯ivo
♯iio
m7(♭5,13)
C
E♭
G♭
B♭
A
0
0
3
039
069
036




iv
m7(♭5,11,♭13)
C
E♭
G♭
B♭
F
A♭
0
058


IV
m7(♭5,11,13)
C
E♭
G♭
B♭
F
A
0
059


♭V
m7(♭5,♭9)
C
E♭
G♭
B♭
D♭
1
059


♭v
m7(♭5,♭9,13)
C
E♭
G♭
B♭
D♭
A
1
058


♭vii
m11(♭5,♭9)
C
E♭
G♭
B♭
D♭
F
1
049


♭II
m11(♭5,♭9,♭13)
C
E♭
G♭
B♭
D♭
F
A♭
1
047


IV+
VI+
♭II+
m13(♭5,♭9)
C
E♭
G♭
B♭
D♭
F
A
1
1
1
048
048
048




II+
♭V+
♭VII+
m9(♭5)
C
E♭
G♭
B♭
D
2
2
2
048
048
048




II
m9(♭5,13)
C
E♭
G♭
B♭
D
A
2
047


♭VII
m11(♭5)
C
E♭
G♭
B♭
D
F
2
038


iio
m11(♭5,♭13)
C
E♭
G♭
B♭
D
F
A♭
2
036


ii
m13(♭5)
C
E♭
G♭
B♭
D
F
A
2
037




Fully Diminished 7th Chord



Available tensions: ♭9, 9, 11, ♭13

UST
Chord
Notes
Base
Arp


♭VI
o7(♭13)
C
E♭
G♭
B♭♭
A♭
0
038


IV
o7(11)
C
E♭
G♭
B♭♭
F
0
059


iv
o7(11,♭13)
C
E♭
G♭
B♭♭
F
A♭
0
058


♭v
o7(♭9)
C
E♭
G♭
B♭♭
D♭
1
058


IV+
VI+
♭II+
o11(♭9)
C
E♭
G♭
B♭♭
D♭
F
1
1
1
048
048
048




♭II
o11(♭9,♭13)
C
E♭
G♭
B♭♭
D♭
F
A♭
1
047


II
o9
C
E♭
G♭
B♭♭
D
2
047


ii
o11
C
E♭
G♭
B♭♭
D
F
2
037


iio
o11(♭13)
C
E♭
G♭
B♭♭
D
F
A♭
2
036




Dominant 7th Suspended 4th Chord



Available tensions: ♭9, 9, 10, 13

UST
Chord
Notes
Base
Arp


IV
7(13)sus4
C
F
G
B♭
A
0
059


♭vii
vo
7(♭9)sus4
C
F
G
B♭
D♭
1
1
049
069



IV+
VI+
♭II+
7(♭9,13)sus4
C
F
G
B♭
D♭
A
1
1
1
048
048
048




♭VII
v
9sus4
C
F
G
B♭
D
2
2
038
058



ii
9(13)sus4
C
F
G
B♭
D
A
2
037


I
iiio
7(10)sus4
C
F
G
B♭
E
0
4
047
036



vi
7(10,13)sus4
C
F
G
B♭
E
A
0
049




Dominant 7th Flat 5th Chord



Available tensions: ♭9, 9, ♯9, ♭13, 13

UST
Chord
Notes
Base
Arp


I+
III+
♭VI+
7(♭5,♭13)
C
E
G♭
B♭
A♭
0
0
0
048
048
048




vi
♯ivo
7(♭5,13)
C
E
G♭
B♭
A
0
0
049
069



♯vio
♭V
7(♭5,♭9)
C
E
G♭
B♭
D♭
1
1
039
059



♭ii
7(♭5,♭9,♭13)
C
E
G♭
B♭
D♭
A♭
1
037


VI
♭v
7(♭5,♭9,13)
C
E
G♭
B♭
D♭
A
1
1
038
058



II+
♭V+
♭VII+
9(♭5)
C
E
G♭
B♭
D
2
2
2
048
048
048




II
9(♭5,13)
C
E
G♭
B♭
D
A
2
047


io
♭iii
7(♭5,♯9)
C
E
G♭
B♭
D♯
0
3
036
037



♭VI
7(♭5,♯9,♭13)
C
E
G♭
B♭
D♯
A♭
0
038


vio
♯iio
7(♭5,♯9,13)
C
E
G♭
B♭
D♯
A
0
3
039
036





Augmented 7th Chord



Available tensions: ♭9, 9, ♯9, ♯11

UST
Chord
Notes
Base
Arp


♭ii
♯vio
7(♯5,♭9)
C
E
G♯
B♭
D♭
1
1
037
039



♭V
7(♯5,♭9,♯11)
C
E
G♯
B♭
D♭
F♯
1
059


II+
♭V+
♭VII+
9(♯5,♯11)
C
E
G♯
B♭
D
F♯
2
2
2
048
048
048




♭VI
7(♯5,♯9)
C
E
G♯
B♭
D♯
0
038


io
♭iii
7(♯5,♯9,♯11)
C
E
G♯
B♭
D♯
F♯
0
3
036
037





Augmented Major 7th Chord



Available tensions: 9, ♯9, ♯11

UST
Chord
Notes
Base
Arp


♯vo
M9(♯5)
C
E
G♯
B
D
2
069


vii
M9(♯5,♯11)
C
E
G♯
B
D
F♯
2
049


♭VI
♭vi
M7(♯5,♯9)
C
E
G♯
B
D♯
0
3
038
058



io
VII
M7(♯5,♯9,♯11)
C
E
G♯
B
D♯
F♯
0
3
036
038





Minor Major 7th Chord



Available tensions: 9, 11, ♯11, 13

UST
Chord
Notes
Base
Arp


vio
mM7(13)
C
E♭
G
B
A
0
039


IV
mM7(11,13)
C
E♭
G
B
F
A
0
059


io
VII
mM7(♯11)
C
E♭
G
B
F♯
0
3
036
038



♯ivo
♯iio
mM7(♯11,13)
C
E♭
G
B
F♯
A
0
3
069
036



V
mM9
C
E♭
G
B
D
2
059


viio
mM11
C
E♭
G
B
D
F
2
039


ii
mM13
C
E♭
G
B
D
F
A
2
037


vii
mM9(♯11)
C
E♭
G
B
D
F♯
2
049


II
mM13(♯11)
C
E♭
G
B
D
F♯
A
2
047




Major 6th Chord



Available tensions: ♭9, 9, ♯9, ♯11

UST
Chord
Notes
Base
Arp


♯ivo
6(♯11)
C
E
G
A
F♯
0
069


♯io
VI
6(♭9)
C
E
G
A
D♭
1
1
036
038



♭v
6(♭9,♯11)
C
E
G
A
D♭
F♯
1
058


II
6(9,♯11)
C
E
G
A
D
F♯
2
047


i
vio
6(♯9)
C
E
G
A
D♯
0
0
037
039



io
♯iio
6(♯9,♯11)
C
E
G
A
D♯
F♯
0
3
036
036





Minor 6th Chord



Available tensions: ♭9, 9, 11, ♯11

UST
Chord
Notes
Base
Arp


IV
m6(11)
C
E♭
G
A
F
0
059


io
♯ivo
♯iio
m6(♯11)
C
E♭
G
A
F♯
0
0
3
036
069
036




IV+
VI+
♭II+
m6(♭9,11)
C
E♭
G
A
D♭
F
1
1
1
048
048
048




♭v
m6(♭9,♯11)
C
E♭
G
A
D♭
F♯
1
058


ii
m6(9,11)
C
E♭
G
A
D
F
2
037


II
m6(9,♯11)
C
E♭
G
A
D
F♯
2
047




See Also



- I Am New To Harmony
- Arps

 
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