How do you play the C dim7/A chord?

To play the C dim7/A chord on piano, play the C dim7 chord (C, Eb, Gb and Bbb) 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 dim7/A chord means a C dim7 chord with A in the bass.

C dim7/A

Q: What notes are in the C dim7/A chord?

The C dim7/A chord uses the 4 notes of the C dim7 chord — C (Perfect unison), Eb (Minor third), Gb (Diminished fifth) and Bbb (Major sixth) — with A played as the bass note in the lowest register.

The C dim7 chord consists of the C (Perfect unison), Eb (Minor third), Gb (Diminished fifth) and Bbb (Major sixth) notes, with A as the bass note.

Piano keyboard showing the notes for a C dim7/A chord

How to play the C dim7/A chord

Play A 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 Gb (Diminished fifth) — 6 semitones above C
Add Bbb (Major sixth) — 9 semitones above C
Press all 5 notes simultaneously to sound the C dim7/A chord

Related chords with same root

A dim7

Related chords with different root

C dim7
D# dim7
F# dim7

Related slash chords

C dim/A