How do you play the C 9(sus2)/D# chord?

To play the C 9(sus2)/D# chord on piano, play the C 9(sus2) chord (C, G, A# and D) with D# as the lowest bass note. Place the D# 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 9(sus2)/D# chord means a C 9(sus2) chord with D# in the bass.

C 9(sus2)/D#

Q: What notes are in the C 9(sus2)/D# chord?

The C 9(sus2)/D# chord uses the 4 notes of the C 9(sus2) chord — C (Perfect unison), G (Perfect fifth), A# (Minor seventh) and D (Major ninth) — with D# played as the bass note in the lowest register.

The C 9(sus2) chord consists of the C (Perfect unison), G (Perfect fifth), A# (Minor seventh) and D (Major ninth) notes, with D# as the bass note.

Piano keyboard showing the notes for a C 9(sus2)/D# chord

How to play the C 9(sus2)/D# chord

Play D# 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 A# (Minor seventh) — 10 semitones above C
Add D (Major ninth) — 14 semitones above C
Press all 5 notes simultaneously to sound the C 9(sus2)/D# chord

Inversions with same root

D# maj7(add13)

Related chords with different root

C m9

Related slash chords

C 7(sus2)/D#
G m(add11)/D#