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Theory
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DEABC#DbF#GbG#Ab
A
1P
Asus4
AM7sus4
AM
Amaj7
A6
Asus2
Asus24
AM9sus4
AMadd9
Amaj9
A6add9
AM7add13
AM7add13
B
2M
Bsus4
B7sus4
Bm
Bm7
Bm6
B4
Bmadd4
Bm7add11
Bsus2
Bsus24
B9sus4
B9sus4
B13sus4
Bmadd9
Bm9
Bm69
Bm13
Bm11
C#
3M
C#7#5sus4
C#sus4
C#7sus4
C#m#5
C#m7#5
C#m
C#m7
C#4
C#madd4
C#m7add11
C#11b9
C#11b9
C#7sus4b9b13
C#mb6b9
D
4P
DM
Dmaj7
D6
DMb5
DM7b5
Dmaj#4
DM6#11
Dsus2
DMadd9
Dmaj9
D6add9
DM7add13
DM7add13
DM9b5
Dmaj9#11
D69#11
DM13#11
E
5P
Esus4
E7sus4
E7no5
EM
E7
E6
E7add6
Esus2
Esus24
E9sus4
E9sus4
E13sus4
E9no5
E13no5
EMadd9
E9
E6add9
E13
F#
6M
F#7#5sus4
F#sus4
F#7sus4
F#m#5
F#m7#5
F#m
F#m7
F#4
F#madd4
F#m7add11
F#sus2
F#sus24
F#9sus4
F#9sus4
F#m9#5
F#madd9
F#m9
F#m11A
F#m11
G#
7M
G#7#5sus4
G#m#5
G#m7#5
G#dim
G#m7b5
G#4
G#mb6b9

How to use it

  1. Select a scale from the drop down menu.
  2. Select a tonic pitch with the top keyboard.
  3. Get lists of chords fit for each degree of the scale.
  4. Play a chord by pressing it's block.