Piano chord

A Add9 Piano Chord (Aadd9)

The A Add9 chord on piano is made of the notes A, C♯, E and B. Rich and shimmering. A major triad with an added 9th (no 7th).

A Add9 chord on a piano keyboard: A, C♯, E, B C5C6 A C♯ E B

Aadd9 A – C♯ – E – B

Tap any key to hear it.

Name any chord from its keys in the chord finder →

What notes are in A Add9?

4 notes, built 1 – 3 – 5 – 9 up from A.

Notes
A – C♯ – E – B
Formula
1 – 3 – 5 – 9
Semitones from the root
0 – 4 – 7 – 14
Symbol
Aadd9
Chord type
Add 9, 4 notes

How to play A Add9 on piano

A Add9 spans more than an octave, so it is usually split between the hands.

  • Left hand: A and E (fingers 5 and 1).
  • Right hand: C♯, B (fingers 1 and 5).
Advertisement

A Add9 inversions

Each inversion puts a different note of the chord in the bass. Written as a slash chord: Aadd9/C♯, Aadd9/E.

A Add9 root position on piano: A, C♯, E, B A C♯ E B
Root position Aadd9 A – C♯ – E – B
A Add9 1st inversion on piano: C♯, E, A, B C♯ E A B
1st inversion Aadd9/C♯ C♯ – E – A – B RH 1 – 2 – 3 – 5 · LH 5 – 3 – 2 – 1
A Add9 2nd inversion on piano: E, A, B, C♯ E A B C♯
2nd inversion Aadd9/E E – A – B – C♯ RH 1 – 2 – 3 – 5 · LH 5 – 3 – 2 – 1

Progressions with A Add9

Press play: the chords move across the keyboard as they sound, voiced so your hand barely moves.

Pop progression

in A major

  1. Iadd9 Aadd9
  2. V E
  3. vi F♯m
  4. IV D
Pop progression in A major: Aadd9, E, F♯m, D A C♯ E B

Three-chord classic

in E major

  1. I E
  2. IVadd9 Aadd9
  3. V B
  4. I E
Three-chord classic in E major: E, Aadd9, B, E B E G♯

Can you find A Add9?

Tap the notes on the keyboard, then check. Six chords, starting with this one.

1 / 6 Tap the notes of A Add9 (Aadd9)

Score 0

Any octave, any order. Each key you tap plays.

Practice keyboard: tap the notes of the chord

What key is A Add9 in?

The keys whose scale contains every note of Aadd9, with the chord’s Roman numeral in each.

Major keys

  • A majorIadd9
  • E majorIVadd9
  • D majorVadd9

Minor keys

  • F♯ minorIIIadd9
  • D minorVadd9 (harmonic minor)
  • C♯ minorVIadd9
  • B minorVIIadd9

A Add9 chord FAQ

What notes are in the A Add9 chord?

A Add9 (Aadd9) has 4 notes: A, C♯, E and B. Its formula is 1 – 3 – 5 – 9, counted up from A.

How do you play A Add9 on the piano?

Spread it over two hands: the left hand plays A and E (fingers 5 and 1), the right hand plays C♯, B (fingers 1 and 5).

What are the inversions of A Add9?

1st inversion: C♯, E, A, B (Aadd9/C♯). 2nd inversion: E, A, B, C♯ (Aadd9/E).

What key is A Add9 in?

Aadd9 belongs to A major (Iadd9), E major (IVadd9), D major (Vadd9), F♯ minor (IIIadd9), C♯ minor (VIadd9) and B minor (VIIadd9).

Other A chords

Add 9 chords on every root

Piano chord chart: all 264 chords Open Aadd9 in the chord finder Free PDF chord chart Play it on the virtual piano