F# m11/A
The F# m11 chord consists of the F# (Perfect unison), A (Minor third), C# (Perfect fifth), E (Minor seventh), G# (Major ninth) and B (Perfect eleventh) notes, with A as the bass note.

How to play the F# m11/A chord
- Play A as the lowest bass note in the left hand
- Find F# (Root) on the piano keyboard
- Add A (Minor third) — 3 semitones above F#
- Add C# (Perfect fifth) — 7 semitones above F#
- Add E (Minor seventh) — 10 semitones above F#
- Add G# (Major ninth) — 14 semitones above F#
- Add B (Perfect eleventh) — 17 semitones above F#
- Press all 7 notes simultaneously to sound the F# m11/A chord