Diminished 7th slash chord
Level 4: Slash chords
Notes: B, D, F, A♭ · Bass note: A♭ · 10th Position
Also known as: Bdim7/A♭, Bdim7/Ab, Bdim7 over A♭, Bdim7 over Ab, B diminished 7th over A♭, Bdim7 slash A♭
Fretting hand for left-handed players (your right hand), Bdim7/A♭. The numbers on the fingertips match the numbers on the chart.Fretting hand for right-handed players (your left hand), Bdim7/A♭. The numbers on the fingertips match the numbers on the chart.
- 1Index
- 2Middle
- 3Ring
- 4Pinky
- TThumb, behind the neck
How to play Bdim7/A♭
- Place your first finger on the tenth fret of the G string.
- Place your second finger on the eleventh fret of the A string.
- Place your third finger on the twelfth fret of the D string.
- Place your fourth finger on the twelfth fret of the B string.
- Strum only the A, D, G and B strings.
Tips for new players
- Keep your thumb behind the neck and let your fingers arch.
- Press just behind the fret, not on top of it, so every string rings clearly.
- Play the plain chord first, then this slash chord, and listen to how the new bass note changes the sound.
Chord video
Watch Bdim7/A♭, step by step
A short animation that builds the Bdim7/A♭ chart and explains every symbol on it.
- X marks a string that is muted or not played.
- Open circle marks a string you play without fretting.
- Numbered dot marks a fretted string. The number is the finger to use.
Learn and practice Bdim7/A♭
Practice progression
Bdim7, Bdim7/A♭
Switch between Bdim7 and Bdim7/A♭ until the changes feel smooth.