F#m9 piano chord — the keys, the inversions, the theory
F#m9 is a minor ninth chord built from F#, A, C#, E, G#. Below: the keys to press, every inversion with its own diagram, the intervals it is made of, the keys whose scale contains it, and a progression that actually uses it. Press any diagram to hear it.
F#m9
F# · A · C# · E · G#
Semitones above the root: 0 – 3 – 7 – 10 – 14
The third is minor — one semitone lower than in a major chord — which is where the darker colour comes from.
Inversions of F#m9
Root position
F# · A · C# · E · G# · bass F#
Inversion 1
A · C# · E · F# · G# · bass A
Inversion 2
C# · E · F# · G# · A · bass C#
Inversion 3
E · F# · G# · A · C# · bass E
Same chord, different note at the bottom. Press a diagram to hear it — inversions are how you move between chords without jumping your hand across the keyboard.
Keys that contain F#m9
- Avi
- Eii
In A it does this job: I – V – vi – IV
- A
- E
- F#m9
- D