A 9th Piano Chord Chart
Notes: A - C# - E - G - B
Formula: 1 - 3 - 5 - ♭7 - 9
Intervals: Root, Major 3rd, Perfect 5th, Minor 7th, Major 9th
A9
Quick answer
The A9 piano chord uses the keys A, C#, E, G, B. Play all 5 notes together for the full A 9th sound.
- Piano keys
- A, C#, E, G, B
- Formula
- 1 - 3 - 5 - ♭7 - 9
- Chord tone count
- 5 notes
Keys to Play
White keys: A, E, G, B
Black keys: C#
Play all 5 notes simultaneously with your right hand.
About 9th Chords
A dominant 7th chord with an added 9th. 9th chords sound rich and funky, essential in funk, R&B, jazz, and blues. They add more color than a basic 7th chord.
A 9th Piano Chord FAQ
What notes are in the A 9th piano chord?
The A 9th piano chord uses the notes A, C#, E, G, B.
Which piano keys do you press for A9?
Press A, C#, E, G, B and play all 5 notes together.
What is the formula for A 9th?
The A 9th formula is 1 - 3 - 5 - ♭7 - 9: Root, Major 3rd, Perfect 5th, Minor 7th, Major 9th.