How do you play the E 7(#11)/C# chord?

To play the E 7(#11)/C# chord on piano, play the E 7(#11) chord (E, G#, B, D and A#) with C# as the lowest bass note. Place the C# note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The E 7(#11)/C# chord means a E 7(#11) chord with C# in the bass.

E 7(#11)/C#

Q: What notes are in the E 7(#11)/C# chord?

The E 7(#11)/C# chord uses the 5 notes of the E 7(#11) chord — E (Perfect unison), G# (Major third), B (Perfect fifth), D (Minor seventh) and A# (Augmented eleventh) — with C# played as the bass note in the lowest register.

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

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

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

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