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A9 Piano Chord
A ninth for piano

A9 for Piano has the notes A Db E G B. Listen to it and learn about its interval structure: R 3 5 m7 9.

A9 Chord

Full name: A ninth
AKA: A7(add9) A7/9
Piano sound:

On this page:
Charts Inversions Structure Chord on other instruments Related scales Chord staff Summary table References Adjust notes

A9 Piano Chord Charts

Piano chord chart
A9 Piano chord chart

A9 Inversions on piano

$A9\Db piano chord$

$A9\E piano chord$

$A9\G piano chord$

$A9\B piano chord$

A9 Chord Structure

Notes: A Db E G B
Interval structure: R 3 5 m7 9

Chord construction:
R = A
A + major interval = Db (scale degree = 3rd)
Db + minor interval = E (scale degree = 5th)
E + minor interval = G (scale degree = minor 7th)
G + major interval = B (scale degree = 9th)

A9 on other instruments

Scales Related to A9

Scales that include all of the notes of A9.
D major D melodic minor E melodic minor D ionian B natural minor E dorian F#/Gb phrygian G lydian A mixolydian B aeolian C#/Db locrian F leading whole tone G overtone A overtone C#/Db altered D#/Eb altered D#/Eb enigmatic G#/Ab dorian b2 A#/Bb dorian b2 F augmented lydian

A9 chord staff

A9 summary table

Piano chord name	A9 (A ninth)
Piano sound
Notes and structure	A Db E G B (R 3 5 m7 9)
Chord Categories	is 7 (dom7) with added 9th 9th chord
Other Notations	A7(add9) A7/9
Chord Construction	R = A A + major interval = Db (scale degree = 3rd) Db + minor interval = E (scale degree = 5th) E + minor interval = G (scale degree = minor 7th) G + major interval = B (scale degree = 9th)
A9 on other instruments	A9 piano A9 guitar A9 ukulele A9 mandolin A9 banjo

Tweak notes of A9

C#
Db

D#
Eb

F#
Gb

G#
Ab

A#
Bb