About the A sharp augmented major nine chord
A sharp augmented major nine sits outside the plain diatonic set, so it is borrowed to add color and tension. Think of it as an A♯ augmented major ninth chord.
Its notes are A♯, D, F♯, A, and B♯. The intervals are a major third, an augmented fifth, a major seventh, and a major ninth.
Also called B flat augmented major nine, which spells the same notes enharmonically. In shorthand it is commonly written A#augMaj9.
Inversions
A sharp augmented major nine (root position)
Notes and intervals
| 1 | A sharp | Root |
|---|---|---|
| 2 | D | Major 3rd |
| 3 | F sharp | Augmented 5th |
| 4 | A | Major 7th |
| 5 | B sharp | Major 9th |
Shapes
Chromatic
Circle of Fifths
Other A sharp chords
Simpler triads
A sharp five chordA sharp major chordA sharp minor chordA sharp diminished chordA sharp augmented chord
Suspended
A sharp suspended two chordA sharp suspended four chordA sharp seven suspended four chordA sharp nine suspended four chordA sharp thirteen suspended four chord
Sixths and sevenths
A sharp six chordA sharp minor six chordA sharp minor flat six chordA sharp seven chordA sharp major seven chordA sharp minor seven chordA sharp minor seven flat five chordA sharp diminished seven chordA sharp minor major seven chordA sharp major seven flat five chordA sharp major seven sharp five chordA sharp minor major seven flat five chord
Extensions
A sharp nine chordA sharp add nine chordA sharp major nine chordA sharp minor nine chordA sharp eleven chordA sharp thirteen chordA sharp six nine chordA sharp minor add nine chordA sharp major eleven chordA sharp major thirteen chordA sharp minor eleven chordA sharp minor thirteen chordA sharp minor six nine chordA sharp minor major nine chordA sharp minor major eleven chord
Altered
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