How do you play the C m7(b9)(#9)/Db chord?

To play the C m7(b9)(#9)/Db chord on piano, play the C m7(b9)(#9) chord (C, Eb, G, Bb, Db and Eb) with Db as the lowest bass note. Place the Db 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 m7(b9)(#9)/Db chord means a C m7(b9)(#9) chord with Db in the bass.

C m7(b9)(#9)/Db

Q: What notes are in the C m7(b9)(#9)/Db chord?

The C m7(b9)(#9)/Db chord uses the 6 notes of the C m7(b9)(#9) chord — C (Perfect unison), Eb (Minor third), G (Perfect fifth), Bb (Minor seventh), Db (Minor ninth) and Eb (Minor tenth) — with Db played as the bass note in the lowest register.

The C m7(b9)(#9) chord consists of the C (Perfect unison), Eb (Minor third), G (Perfect fifth), Bb (Minor seventh), Db (Minor ninth) and Eb (Minor tenth) notes, with Db as the bass note.

Piano keyboard showing the notes for a C m7(b9)(#9)/Db chord

How to play the C m7(b9)(#9)/Db chord

Play Db as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add Eb (Minor third) — 3 semitones above C
Add G (Perfect fifth) — 7 semitones above C
Add Bb (Minor seventh) — 10 semitones above C
Add Db (Minor ninth) — 13 semitones above C
Add Eb (Minor tenth) — 15 semitones above C
Press all 7 notes simultaneously to sound the C m7(b9)(#9)/Db chord

Related chords with different root

C m7(b9)
C m7(b9)(#9)
Eb m7(add6)
Eb 7(add6)

Related slash chords

C m7/Db
C m7(#9)/Db
Eb 6/Db
Eb add13/Db