C# m9(#5)

The C# m9(#5) chord consists of the C# (Perfect unison), E (Minor third), A (Minor sixth), B (Minor seventh) and D# (Major ninth) notes.

Piano keyboard showing the notes for a C# m9(#5) chord

How to play the C# m9(#5) chord

  1. Find C# (Root) on the piano keyboard
  2. Add E (Minor third) — 3 semitones above C#
  3. Add A (Minor sixth) — 8 semitones above C#
  4. Add B (Minor seventh) — 10 semitones above C#
  5. Add D# (Major ninth) — 14 semitones above C#
  6. Press all 5 notes simultaneously to sound the C# m9(#5) chord

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