A#9 chord
A#9 chord for guitar with diagrams, fingerings and notes.
All chords More A# chordsDescription and theory
A#9 is more commonly spelled Bb9.
Chord structure
The chord consists of five notes. The notes represent the root, the third, the perfect fifth, the minor seventh and raised ninth intervals. Notice that the third or the fifth is sometimes omitted.
Chord name
A#9 is an abbreviation for A sharp dominant ninth. A less common abbreviation is A#dom9.
Notes
The notes that the A#9 chord consists of are A#, D, F, G# and C.
Inversions
1st inversion: A#9/D (means that D is the bass note).
2nd inversion: A#9/F (means that F is the bass note).
3rd inversion: A#9/G# (means that G# is the bass note).
4th inversion: A#9/C (means that C is the bass note).
Omissions
A#9(no3) is an A sharp dominant 9th with no third (D).
A#9(no5) is an A sharp dominant 9th with no fifth (F).
Chord progressions
Examples of progressions featuring A#9.
| Progression 1: I - VI - ii - V progression. | |||
|---|---|---|---|
C#maj7 |
A#9 |
D#m9 |
G#7 |