How do you play the A dim7/Bb chord?

To play the A dim7/Bb chord on piano, play the A dim7 chord (A, C, Eb and Gb) with Bb as the lowest bass note. Place the Bb 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 A dim7/Bb chord means a A dim7 chord with Bb in the bass.

A dim7/Bb

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

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

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

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

How to play the A dim7/Bb chord

Play Bb as the lowest bass note in the left hand
Find A (Root) on the piano keyboard
Add C (Minor third) — 3 semitones above A
Add Eb (Diminished fifth) — 6 semitones above A
Add Gb (Major sixth) — 9 semitones above A
Press all 5 notes simultaneously to sound the A dim7/Bb chord

Related slash chords

C dim7/Bb
D# dim7/A#
F# dim7/A#