How do you play the C m9(#11)/Db chord?

To play the C m9(#11)/Db chord on piano, play the C m9(#11) chord (C, Eb, G, Bb, D and F#) 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 m9(#11)/Db chord means a C m9(#11) chord with Db in the bass.

C m9(#11)/Db

Q: What notes are in the C m9(#11)/Db chord?

The C m9(#11)/Db chord uses the 6 notes of the C m9(#11) chord — C (Perfect unison), Eb (Minor third), G (Perfect fifth), Bb (Minor seventh), D (Major ninth) and F# (Augmented eleventh) — with Db played as the bass note in the lowest register.

The C m9(#11) chord consists of the C (Perfect unison), Eb (Minor third), G (Perfect fifth), Bb (Minor seventh), D (Major ninth) and F# (Augmented eleventh) notes, with Db as the bass note.

Piano keyboard showing the notes for a C m9(#11)/Db chord

How to play the C m9(#11)/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 D (Major ninth) — 14 semitones above C
Add F# (Augmented eleventh) — 18 semitones above C
Press all 7 notes simultaneously to sound the C m9(#11)/Db chord