F# m7/A#
The F# m7 chord consists of the F# (Perfect unison), A (Minor third), C# (Perfect fifth) and E (Minor seventh) notes, with A# as the bass note.

How to play the F# m7/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#
- Press all 5 notes simultaneously to sound the F# m7/A# chord