C# 7(#11)/E

The C# 7(#11) chord consists of the C# (Perfect unison), F (Major third), G# (Perfect fifth), B (Minor seventh) and G (Augmented eleventh) notes, with E as the bass note.

Piano keyboard showing the notes for a C# 7(#11)/E chord

How to play the C# 7(#11)/E chord

  1. Play E as the lowest bass note in the left hand
  2. Find C# (Root) on the piano keyboard
  3. Add F (Major third) — 4 semitones above C#
  4. Add G# (Perfect fifth) — 7 semitones above C#
  5. Add B (Minor seventh) — 10 semitones above C#
  6. Add G (Augmented eleventh) — 18 semitones above C#
  7. Press all 6 notes simultaneously to sound the C# 7(#11)/E chord