A# m3/F
The A# m3 chord consists of the A# (Perfect unison) and C# (Minor third) notes, with F as the bass note.

How to play the A# m3/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#
- Press all 3 notes simultaneously to sound the A# m3/F chord