How do you play the C 5(add9)/A# chord?

To play the C 5(add9)/A# chord on piano, play the C 5(add9) chord (C, G and D) with A# as the lowest bass note. Place the A# 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 5(add9)/A# chord means a C 5(add9) chord with A# in the bass.

C 5(add9)/A#

Q: What notes are in the C 5(add9)/A# chord?

The C 5(add9)/A# chord uses the 3 notes of the C 5(add9) chord — C (Perfect unison), G (Perfect fifth) and D (Major ninth) — with A# played as the bass note in the lowest register.

The C 5(add9) chord consists of the C (Perfect unison), G (Perfect fifth) and D (Major ninth) notes, with A# as the bass note.

Piano keyboard showing the notes for a C 5(add9)/A# chord

How to play the C 5(add9)/A# chord

Play A# as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add G (Perfect fifth) — 7 semitones above C
Add D (Major ninth) — 14 semitones above C
Press all 4 notes simultaneously to sound the C 5(add9)/A# chord

Related chords with different root

C 7(sus2)
C 9(sus2)
G m(add11)

Related slash chords

C sus2/A#
D 11(sus4)/A#
G sus4/A#