About the A sharp major seven flat nine chord
A sharp major seven flat nine sits outside the plain diatonic set, so it is borrowed to add color and tension. Think of it as an A♯ major seventh flat nine chord.
Its notes are A♯, D, E♯, A, and B. The intervals are a major third, a perfect fifth, a major seventh, and a minor ninth.
Also called B flat major seven flat nine, which spells the same notes enharmonically. In shorthand it is commonly written A#maj7b9.
Inversions
A sharp major seven flat nine (root position)
Notes and intervals
| 1 | A sharp | Root |
|---|---|---|
| 2 | D | Major 3rd |
| 3 | E sharp | Perfect 5th |
| 4 | A | Major 7th |
| 5 | B | Minor 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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