Diminished 7th slash chord
Level 4: Slash chords
Notes: G, B♭, D♭, F♭ · Bass note: B♭ · 12th Position
Also known as: Gdim7/B♭, Gdim7/Bb, Gdim7 over B♭, Gdim7 over Bb, G diminished 7th over B♭, Gdim7 slash B♭
Fretting hand for left-handed players (your right hand), Gdim7/B♭. The numbers on the fingertips match the numbers on the chart.Fretting hand for right-handed players (your left hand), Gdim7/B♭. The numbers on the fingertips match the numbers on the chart.
- 1Index
- 2Middle
- 3Ring
- 4Pinky
- TThumb, behind the neck
How to play Gdim7/B♭
- Place your first finger on the twelfth fret of the G string.
- Place your second finger on the thirteenth fret of the A string.
- Place your third finger on the fourteenth fret of the D string.
- Place your fourth finger on the fourteenth 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 Gdim7/B♭, step by step
A short animation that builds the Gdim7/B♭ 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 Gdim7/B♭
Practice progression
Gdim7, Gdim7/B♭
Switch between Gdim7 and Gdim7/B♭ until the changes feel smooth.