How do you play the C add11/C# chord?

To play the C add11/C# chord on piano, play the C add11 chord (C, E, G and F) 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 C add11/C# chord means a C add11 chord with C# in the bass.

C add11/C#

Q: What notes are in the C add11/C# chord?

The C add11/C# chord uses the 4 notes of the C add11 chord — C (Perfect unison), E (Major third), G (Perfect fifth) and F (Perfect eleventh) — with C# played as the bass note in the lowest register.

The C add11 chord consists of the C (Perfect unison), E (Major third), G (Perfect fifth) and F (Perfect eleventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a C add11/C# chord

How to play the C add11/C# chord

Play C# as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add E (Major third) — 4 semitones above C
Add G (Perfect fifth) — 7 semitones above C
Add F (Perfect eleventh) — 17 semitones above C
Press all 5 notes simultaneously to sound the C add11/C# chord

Related slash chords

F maj7(sus2)/C#
F maj9(sus2)/C#