C# m(maj7)(#5)/A#

The C# m(maj7)(#5) chord consists of the C# (Perfect unison), E (Minor third), A (Minor sixth) and C (Major seventh) notes, with A# as the bass note.

Piano keyboard showing the notes for a C# m(maj7)(#5)/A# chord

How to play the C# m(maj7)(#5)/A# chord

  1. Play A# 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 A (Minor sixth) — 8 semitones above C#
  5. Add C (Major seventh) — 11 semitones above C#
  6. Press all 5 notes simultaneously to sound the C# m(maj7)(#5)/A# chord