A m9/F
The A m9 chord consists of the A (Perfect unison), C (Minor third), E (Perfect fifth), G (Minor seventh) and B (Major ninth) notes, with F as the bass note.

How to play the A m9/F chord
- Play F as the lowest bass note in the left hand
- Find A (Root) on the piano keyboard
- Add C (Minor third) — 3 semitones above A
- Add E (Perfect fifth) — 7 semitones above A
- Add G (Minor seventh) — 10 semitones above A
- Add B (Major ninth) — 14 semitones above A
- Press all 6 notes simultaneously to sound the A m9/F chord