This chord has 4 voicings across the fretboard. Use the arrows to see each shape and fingering — and tap any dot on the diagram to hear that note.
A#dim Guitar Chord
A diminished chord. A#dim has eerie quality.
Also known as
- A#°
- Bb°
- A# °
- Bb °
- Bbdim
- A# dim
- Bb dim
- B-flat°
- A-sharp°
- B-flat °
- A-sharp °
- B-flatdim
- A-sharpdim
- B-flat dim
- A-sharp dim
- A#diminished
- Bbdiminished
- A# diminished
- Bb diminished
- B-flatdiminished
- A-sharpdiminished
- B-flat diminished
- A-sharp diminished
How to Play This Chord
Position your fingers on the fretboard as shown in the diagram. The vertical lines represent the strings, from low E (left) to high E (right), and the horizontal lines are the frets. Numbers inside the dots indicate which finger to use: 1 (index), 2 (middle), 3 (ring), 4 (pinky). An X means don't play that string; an O means play it open. A bar spanning multiple strings means one finger presses across all of them at once — this is known as a barre chord.
Tips & Tricks
A# diminished is the vii° chord in B major/Cb major. It functions as a leading tone chord that resolves up to B. Use the movable diminished shape at the 1st fret on the A string. Keep your fingers tightly arched in this cramped position.