Piano chord · Ninths
A dominant 9th chord on piano
Right hand: A (1), C♯ (2), E (3), G (4), B (5)
How to play A9 on piano: the keys to press, which fingers to use, inversions and how it’s written on the staff.
A dominant 7th with an added 9th — funky and full.
- Notes
- AC♯EGB
- Formula
- 135♭79
- Built from
- root · major 3rd · perfect 5th · minor 7th · major 9th
Piano
Root position · numbers are finger numbers
How to play it
Right handA1 · thumbC♯2 · indexE3 · middleG4 · ringB5 · pinky
Left handA5 · pinkythe root, an octave lower
Finger numbers: 1 thumb · 2 index · 3 middle · 4 ring · 5 pinky. Inversions use the same notes with a different one on the bottom — they help you move smoothly between chords. Tap any key to hear it.
Tips for playing A9 on piano
On piano, A9 has one black key (C♯) and four white keys. In root position it spans more than an octave, so many pianists play the root with the left hand and the rest with the right.
