C# add2/F#
The C# add2 chord consists of the C# (Perfect unison), D# (Major second), F (Major third) and G# (Perfect fifth) notes, with F# as the bass note.

How to play the C# add2/F# chord
- Play F# as the lowest bass note in the left hand
- Find C# (Root) on the piano keyboard
- Add D# (Major second) — 2 semitones above C#
- Add F (Major third) — 4 semitones above C#
- Add G# (Perfect fifth) — 7 semitones above C#
- Press all 5 notes simultaneously to sound the C# add2/F# chord