C# sus4(b5)/A
The C# sus4(b5) chord consists of the C# (Perfect unison), F# (Perfect fourth) and G (Diminished fifth) notes, with A as the bass note.
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How to play the C# sus4(b5)/A chord
- Play A as the lowest bass note in the left hand
- Find C# (Root) on the piano keyboard
- Add F# (Perfect fourth) — 5 semitones above C#
- Add G (Diminished fifth) — 6 semitones above C#
- Press all 4 notes simultaneously to sound the C# sus4(b5)/A chord