C# m(maj9)(#11)/D

The C# m(maj9)(#11) chord consists of the C# (Perfect unison), E (Minor third), G# (Perfect fifth), C (Major seventh), D# (Major ninth) and G (Augmented eleventh) notes, with D as the bass note.

Piano keyboard showing the notes for a C# m(maj9)(#11)/D chord

How to play the C# m(maj9)(#11)/D chord

  1. Play D as the lowest bass note in the left hand
  2. Find C# (Root) on the piano keyboard
  3. Add E (Minor third) — 3 semitones above C#
  4. Add G# (Perfect fifth) — 7 semitones above C#
  5. Add C (Major seventh) — 11 semitones above C#
  6. Add D# (Major ninth) — 14 semitones above C#
  7. Add G (Augmented eleventh) — 18 semitones above C#
  8. Press all 7 notes simultaneously to sound the C# m(maj9)(#11)/D chord