F sus2/F#
The F sus2 chord consists of the F (Perfect unison), G (Major second) and C (Perfect fifth) notes, with F# as the bass note.

How to play the F sus2/F# chord
- Play F# as the lowest bass note in the left hand
- Find F (Root) on the piano keyboard
- Add G (Major second) — 2 semitones above F
- Add C (Perfect fifth) — 7 semitones above F
- Press all 4 notes simultaneously to sound the F sus2/F# chord