What you are learning
A Maj9 · Displayed in: A · Major ninth chord · Tones: A, C#, E, G#, B · Aliases: Maj9, M9, Δ9
A · Chord
A Maj9
A Maj9 · Displayed in: A · Major ninth chord · Tones: A, C#, E, G#, B · Aliases: Maj9, M9, Δ9
Guided start
Start with a clear learning action
Try first
Chord and Scale
Next step
Type key + scale (e.g. C Major, F Dorian)
Open support for A Maj9
How to use this page
- Chord and Scale
- Tones: 5
- Relations
Example
A Maj9: A, C#, E, G#, B
A Maj9 · Chord · A · 5 Tones
Network of this chord or scale with contain / contained-in relations.
Type key + scale (e.g. C Major, F Dorian)
A Maj9
Public
Chord
• 1,2,2,3,4 • 5 tones
Chord and Scale
Matches
Description / Aliases
Major ninth chord
Aliases
Maj9
M9
Δ9
Generic fingering match
Select instrument and keyscale to scan all generics.
No catalog scan has run yet.
Tones
Selected relation
Current
Select a relation to inspect its playback controls and tone metadata.
Note: A
Interval: 1
Degree: 1
MIDI: 57
Hz: 698.46
Relations
Loading related chords and scales...
Note: C#
Interval: 3
Degree: 2
MIDI: 61
Hz: 415.31
Relations
Loading related chords and scales...
Note: E
Interval: 5
Degree: 3
MIDI: 64
Hz: 523.25
Relations
Loading related chords and scales...
Note: G#
Interval: 7
Degree: 4
MIDI: 68
Hz: 622.25
Relations
Loading related chords and scales...
Note: B
Interval: 9
Degree: 5
MIDI: 71
Hz: 783.99
Relations
Loading related chords and scales...
Relations
Loading...
Network of this chord or scale with contain / contained-in relations.
Consonance heuristic
Mildly consonant
Set: 0, 1, 3, 5, 8
Vector: [1, 2, 2, 2, 3, 0]
Score: 0.80
open / fifth-supported
This set has 5 pitch classes, 1 close/tritone pressure points and 7 consonant-support intervals; average heuristic score: 0.80.
| Interval | Count | Weight | Contribution |
|---|---|---|---|
| m2 / M7 | 1 | -5 | -5 |
| M2 / m7 | 2 | -2 | -4 |
| m3 / M6 | 2 | +2 | +4 |
| M3 / m6 | 2 | +2 | +4 |
| P4 / P5 | 3 | +3 | +9 |
| Tritone | 0 | -4 | 0 |
Consonance graph
Bridge candidates
2363 candidates
| Target | Shared tones | Pivot | Voice-leading | Δ consonance | Bridge score |
|---|---|---|---|---|---|
|
C# m7 11 b13
Chord
Smooth pivot
|
1, C#, 8, 9, G# | 1, C#, 8, 9 | 0.17 | 0.00 | 4.51 |
|
F# m11
Chord
Smooth pivot
|
1, C#, 8, 9, G# | 1, C#, 8, 9 | 0.17 | 0.00 | 4.51 |
|
A Maj13
Chord
Smooth pivot
|
1, C#, 8, 9, G# | 1, C#, 8, 9 | 0.17 | 0.00 | 4.51 |
|
B 13sus4
Chord
Smooth pivot
|
1, C#, 8, 9, G# | 1, C#, 8, 9 | 0.17 | 0.00 | 4.51 |
|
B Hexatonic Pentatonic
Scale
Smooth pivot
|
1, C#, 8, 9, G# | 1, C#, 8, 9 | 0.17 | 0.00 | 4.51 |
|
C# m9
Chord
Smooth pivot
|
1, C#, 8, G# | 1, C#, 8, G# | 0.20 | 0.00 | 4.37 |
|
E Maj7add13
Chord
Smooth pivot
|
1, C#, 8, G# | 1, C#, 8, G# | 0.20 | 0.00 | 4.37 |
|
A Maj7#9
Chord
Smooth pivot
|
1, C#, 8, 9 | 1, C#, 8, 9 | 0.20 | 0.00 | 4.37 |
|
A Maj7b13
Chord
Smooth pivot
|
1, C#, 8, 9 | 1, C#, 8, 9 | 0.30 | 0.00 | 4.32 |
|
F# m9
Chord
Smooth pivot
|
1, C#, 8, 9 | 1, C#, 8, 9 | 0.40 | 0.00 | 4.28 |
|
A Maj7add13
Chord
Smooth pivot
|
1, C#, 8, 9 | 1, C#, 8, 9 | 0.40 | 0.00 | 4.28 |
|
C# m7#5
Chord
Smooth pivot
|
1, C#, 9, G# | 1, C#, 9, G# | 0.10 | 0.20 | 4.14 |