What you are learning
Bb Maj9 · Displayed in: Bb · Major ninth chord · Tones: Bb, D, F, A, C · Aliases: Maj9, M9, Δ9
Bb Maj9 · Displayed in: Bb · Major ninth chord · Tones: Bb, D, F, A, C · Aliases: Maj9, M9, Δ9
Bb Maj9 · Displayed in: Bb · Major ninth chord · Tones: Bb, D, F, A, C · Aliases: Maj9, M9, Δ9
Chord and Scale
Type key + scale (e.g. C Major, F Dorian)
Bb Maj9: Bb, D, F, A, C
Bb Maj9 · Chord · Bb · 5 Tones
Network of this chord or scale with contain / contained-in relations.
Type key + scale (e.g. C Major, F Dorian)
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 |
| Target | Shared tones | Pivot | Voice-leading | Δ consonance | Bridge score |
|---|---|---|---|---|---|
|
C 13sus4
Chord
Smooth pivot
|
Bb, C, 5, 9, 10 | Bb, C, 5, 9 | 0.17 | 0.00 | 4.51 |
|
C Hexatonic Pentatonic
Scale
Smooth pivot
|
Bb, C, 5, 9, 10 | Bb, C, 5, 9 | 0.17 | 0.00 | 4.51 |
|
D m7 11 b13
Chord
Smooth pivot
|
Bb, C, 5, 9, 10 | Bb, C, 5, 9 | 0.17 | 0.00 | 4.51 |
|
G m11
Chord
Smooth pivot
|
Bb, C, 5, 9, 10 | Bb, C, 5, 9 | 0.17 | 0.00 | 4.51 |
|
Bb Maj13
Chord
Smooth pivot
|
Bb, C, 5, 9, 10 | Bb, C, 5, 9 | 0.17 | 0.00 | 4.51 |
|
D m9
Chord
Smooth pivot
|
Bb, C, 5, 9 | Bb, C, 5, 9 | 0.20 | 0.00 | 4.37 |
|
F Maj7add13
Chord
Smooth pivot
|
Bb, C, 5, 9 | Bb, C, 5, 9 | 0.20 | 0.00 | 4.37 |
|
Bb Maj7#9
Chord
Smooth pivot
|
C, 5, 9, 10 | C, 5, 9, 10 | 0.20 | 0.00 | 4.37 |
|
Bb Maj7b13
Chord
Smooth pivot
|
C, 5, 9, 10 | C, 5, 9, 10 | 0.30 | 0.00 | 4.32 |
|
G m9
Chord
Smooth pivot
|
C, 5, 9, 10 | C, 5, 9, 10 | 0.40 | 0.00 | 4.28 |
|
Bb Maj7add13
Chord
Smooth pivot
|
C, 5, 9, 10 | C, 5, 9, 10 | 0.40 | 0.00 | 4.28 |
|
C 7sus2add4no5
Chord
Smooth pivot
|
Bb, C, 5, 10 | Bb, C, 5, 10 | 0.10 | 0.20 | 4.14 |
Records chord/scale plays and global output tone groups (tones + intervals only).
Use advanced audio settings as the playback source for chord-grid clicks, test chord charts, and inspect the generated accompaniment.
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