This page shows which major, minor, and harmonic minor keys a particular triad is diatonic to. Find the chord that you want to know which keys it belongs to in the left-most column, then look for the x's on that row for all the keys.
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Major
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| A |
I |
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V |
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IV |
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| Am |
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vi |
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iii |
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ii |
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| A+ |
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| A° |
|
vii° |
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| A♯ |
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I |
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V |
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IV |
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| A♯m |
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vi |
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iii |
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ii
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| A♯+ |
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| A♯° |
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vii° |
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Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| B |
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I |
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V |
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IV |
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| Bm |
ii |
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vi |
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iii |
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| B+ |
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| B° |
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vii° |
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| C |
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I |
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V |
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IV |
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| Cm |
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ii |
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vi |
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iii
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| C+ |
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| C° |
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vii° |
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| C♯ |
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I |
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V |
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IV
|
| C♯m |
iii |
|
ii |
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vi |
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| C♯+ |
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| C♯° |
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vii° |
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|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| D |
IV |
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I |
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V |
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| Dm |
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iii |
|
ii |
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vi |
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| D+ |
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| D° |
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vii° |
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| D♯ |
|
IV |
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I |
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V
|
| D♯m |
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|
iii |
|
ii |
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vi |
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| D♯+ |
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| D♯° |
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vii° |
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|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| E |
V |
|
IV |
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|
I |
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| Em |
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iii |
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ii |
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vi |
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| E+ |
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| E° |
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vii° |
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| F |
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V |
|
IV |
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|
I |
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| Fm |
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iii |
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ii |
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vi
|
| F+ |
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| F° |
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vii° |
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| F♯ |
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V |
|
IV |
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|
I |
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| F♯m |
vi |
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iii |
|
ii |
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| F♯+ |
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| F♯° |
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|
vii° |
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| G |
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V |
|
IV |
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I |
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| Gm |
|
vi |
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iii |
|
ii |
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| G+ |
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| G° |
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vii°
|
| G♯ |
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V |
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IV |
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|
I
|
| G♯m |
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|
vi |
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iii |
|
ii |
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| G♯+ |
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| G♯° |
vii° |
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Minor
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| A |
|
|
VII |
|
VI |
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|
III |
|
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| Am |
i |
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|
v |
|
iv |
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| A+ |
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| A° |
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ii° |
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| A♯ |
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VII |
|
VI |
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|
III |
|
| A♯m |
|
i |
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|
v |
|
iv |
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| A♯+ |
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| A♯° |
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|
ii°
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| B |
|
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|
VII |
|
VI |
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III
|
| Bm |
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|
i |
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|
v |
|
iv |
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| B+ |
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| B° |
ii° |
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| C |
III |
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VII |
|
VI |
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| Cm |
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|
i |
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|
v |
|
iv |
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| C+ |
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| C° |
|
ii° |
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| C♯ |
|
III |
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|
VII |
|
VI |
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| C♯m |
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|
i |
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|
v |
|
iv
|
| C♯+ |
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| C♯° |
|
|
ii° |
|
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|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| D |
|
|
III |
|
|
|
|
VII |
|
VI |
|
|
| Dm |
iv |
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|
i |
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|
v |
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| D+ |
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| D° |
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|
ii° |
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| D♯ |
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|
III |
|
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|
VII |
|
VI |
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| D♯m |
|
iv |
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|
i |
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|
v
|
| D♯+ |
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| D♯° |
|
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|
ii° |
|
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|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| E |
|
|
|
|
III |
|
|
|
|
VII |
|
VI
|
| Em |
v |
|
iv |
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|
i |
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| E+ |
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| E° |
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|
ii° |
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| F |
VI |
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|
III |
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|
VII |
|
| Fm |
|
v |
|
iv |
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|
i |
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| F+ |
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| F° |
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|
ii° |
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| F♯ |
|
VI |
|
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|
III |
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|
VII
|
| F♯m |
|
|
v |
|
iv |
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|
i |
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| F♯+ |
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| F♯° |
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|
ii° |
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| G |
VII |
|
VI |
|
|
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|
III |
|
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| Gm |
|
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|
v |
|
iv |
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|
i |
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| G+ |
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| G° |
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|
ii° |
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| G♯ |
|
VII |
|
VI |
|
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|
III |
|
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| G♯m |
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|
v |
|
iv |
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|
i
|
| G♯+ |
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| G♯° |
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|
ii° |
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Harmonic Minor
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| A |
|
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|
VI |
V |
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| Am |
i |
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iv |
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| A+ |
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|
III+ |
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| A° |
|
vii° |
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|
ii° |
|
| A♯ |
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VI |
V |
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| A♯m |
|
i |
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|
iv |
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| A♯+ |
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|
III+ |
|
| A♯° |
|
|
vii° |
|
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|
ii°
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| B |
|
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|
VI |
V |
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| Bm |
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|
i |
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|
iv |
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| B+ |
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III+
|
| B° |
ii° |
|
|
vii° |
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| C |
|
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VI |
V |
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| Cm |
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|
i |
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|
iv |
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| C+ |
III+ |
|
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| C° |
|
ii° |
|
|
vii° |
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| C♯ |
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|
VI |
V |
|
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| C♯m |
|
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|
i |
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|
iv
|
| C♯+ |
|
III+ |
|
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| C♯° |
|
|
ii° |
|
|
vii° |
|
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|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| D |
|
|
|
|
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|
VI |
V |
|
| Dm |
iv |
|
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|
i |
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| D+ |
|
|
III+ |
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| D° |
|
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|
ii° |
|
|
vii° |
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| D♯ |
|
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|
VI |
V
|
| D♯m |
|
iv |
|
|
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|
i |
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| D♯+ |
|
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|
III+ |
|
|
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|
|
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| D♯° |
|
|
|
|
ii° |
|
|
vii° |
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| E |
V |
|
|
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|
VI
|
| Em |
|
|
iv |
|
|
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|
i |
|
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| E+ |
|
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|
III+ |
|
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| E° |
|
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|
ii° |
|
|
vii° |
|
|
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| F |
VI |
V |
|
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| Fm |
|
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|
iv |
|
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|
i |
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| F+ |
|
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|
III+ |
|
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| F° |
|
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|
|
ii° |
|
|
vii° |
|
|
| F♯ |
|
VI |
V |
|
|
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|
|
|
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|
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| F♯m |
|
|
|
|
iv |
|
|
|
|
i |
|
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| F♯+ |
|
|
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|
III+ |
|
|
|
|
|
| F♯° |
|
|
|
|
|
|
|
ii° |
|
|
vii° |
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| G |
|
|
VI |
V |
|
|
|
|
|
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|
|
| Gm |
|
|
|
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|
iv |
|
|
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|
i |
|
| G+ |
|
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|
III+ |
|
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| G° |
|
|
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|
|
|
|
|
ii° |
|
|
vii°
|
| G♯ |
|
|
|
VI |
V |
|
|
|
|
|
|
|
| G♯m |
|
|
|
|
|
|
iv |
|
|
|
|
i
|
| G♯+ |
|
|
|
|
|
|
|
|
III+ |
|
|
|
| G♯° |
vii° |
|
|
|
|
|
|
|
|
ii° |
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| A |
|
|
(VII) |
|
VI |
[V] |
|
|
|
(III) |
|
|
| Am |
i |
|
|
|
|
(v) |
|
iv |
|
|
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| A+ |
|
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|
|
[III+] |
|
|
| A° |
|
[vii°] |
|
|
|
|
|
|
|
|
ii° |
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| A♯ |
|
|
|
(VII) |
|
VI |
[V] |
|
|
|
(III) |
|
| A♯m |
|
i |
|
|
|
|
(v) |
|
iv |
|
|
|
| A♯+ |
|
|
|
|
|
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|
|
[III+] |
|
| A♯° |
|
|
[vii°] |
|
|
|
|
|
|
|
|
ii°
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| B |
|
|
|
|
(VII) |
|
VI |
[V] |
|
|
|
(III)
|
| Bm |
|
|
i |
|
|
|
|
(v) |
|
iv |
|
|
| B+ |
|
|
|
|
|
|
|
|
|
|
|
[III+]
|
| B° |
ii° |
|
|
[vii°] |
|
|
|
|
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| C |
(III) |
|
|
|
|
(VII) |
|
VI |
[V] |
|
|
|
| Cm |
|
|
|
i |
|
|
|
|
(v) |
|
iv |
|
| C+ |
[III+] |
|
|
|
|
|
|
|
|
|
|
|
| C° |
|
ii° |
|
|
[vii°] |
|
|
|
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| C♯ |
|
(III) |
|
|
|
|
(VII) |
|
VI |
[V] |
|
|
| C♯m |
|
|
|
|
i |
|
|
|
|
(v) |
|
iv
|
| C♯+ |
|
[III+] |
|
|
|
|
|
|
|
|
|
|
| C♯° |
|
|
ii° |
|
|
[vii°] |
|
|
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| D |
|
|
(III) |
|
|
|
|
(VII) |
|
VI |
[V] |
|
| Dm |
iv |
|
|
|
|
i |
|
|
|
|
(v) |
|
| D+ |
|
|
[III+] |
|
|
|
|
|
|
|
|
|
| D° |
|
|
|
ii° |
|
|
[vii°] |
|
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| D♯ |
|
|
|
(III) |
|
|
|
|
(VII) |
|
VI |
[V]
|
| D♯m |
|
iv |
|
|
|
|
i |
|
|
|
|
(v)
|
| D♯+ |
|
|
|
[III+] |
|
|
|
|
|
|
|
|
| D♯° |
|
|
|
|
ii° |
|
|
[vii°] |
|
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| E |
[V] |
|
|
|
(III) |
|
|
|
|
(VII) |
|
VI
|
| Em |
(v) |
|
iv |
|
|
|
|
i |
|
|
|
|
| E+ |
|
|
|
|
[III+] |
|
|
|
|
|
|
|
| E° |
|
|
|
|
|
ii° |
|
|
[vii°] |
|
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| F |
VI |
[V] |
|
|
|
(III) |
|
|
|
|
(VII) |
|
| Fm |
|
(v) |
|
iv |
|
|
|
|
i |
|
|
|
| F+ |
|
|
|
|
|
[III+] |
|
|
|
|
|
|
| F° |
|
|
|
|
|
|
ii° |
|
|
[vii°] |
|
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| F♯ |
|
VI |
[V] |
|
|
|
(III) |
|
|
|
|
(VII)
|
| F♯m |
|
|
(v) |
|
iv |
|
|
|
|
i |
|
|
| F♯+ |
|
|
|
|
|
|
[III+] |
|
|
|
|
|
| F♯° |
|
|
|
|
|
|
|
ii° |
|
|
[vii°] |
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| G |
(VII) |
|
VI |
[V] |
|
|
|
(III) |
|
|
|
|
| Gm |
|
|
|
(v) |
|
iv |
|
|
|
|
i |
|
| G+ |
|
|
|
|
|
|
|
[III+] |
|
|
|
|
| G° |
|
|
|
|
|
|
|
|
ii° |
|
|
[vii°]
|
Key/ Chd |
A |
A♯ |
B |
C |
C♯ |
D |
D♯ |
E |
F |
F♯ |
G |
G♯
|
| G♯ |
|
(VII) |
|
VI |
[V] |
|
|
|
(III) |
|
|
|
| G♯m |
|
|
|
|
(v) |
|
iv |
|
|
|
|
i
|
| G♯+ |
|
|
|
|
|
|
|
|
[III+] |
|
|
|
| G♯° |
[vii°] |
|
|
|
|
|
|
|
|
ii° |
|
|
|