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#m7♭5 Guitar Chord
A half-diminished seventh chord with a dark, restless quality. A#m7♭5 appears naturally in minor keys and is essential for jazz ii-V-i progressions.
Also known as
- A#ø
- Bbø
- A# ø
- A#ø7
- Bb ø
- Bbø7
- A# ø7
- Bb ø7
- A#m7b5
- Bbm7♭5
- Bbm7b5
- A# m7♭5
- A# m7b5
- Bb m7♭5
- Bb m7b5
- B-flatø
- A-sharpø
- B-flat ø
- B-flatø7
- A-sharp ø
- A-sharpø7
- B-flat ø7
- A#half-dim
- A-sharp ø7
- Bbhalf-dim
- B-flatm7♭5
- B-flatm7b5
- A# half-dim
- A#half-dim7
- A-sharpm7♭5
- A-sharpm7b5
- Bb half-dim
- Bbhalf-dim7
- B-flat m7♭5
- B-flat m7b5
- A# half-dim7
- A-sharp m7♭5
- A-sharp m7b5
- Bb half-dim7
- B-flathalf-dim
- A-sharphalf-dim
- B-flat half-dim
- B-flathalf-dim7
- A-sharp half-dim
- A-sharphalf-dim7
- B-flat half-dim7
- A-sharp half-dim7
- A# half-diminished 7th
- Bb half-diminished 7th
- A# half-diminished seventh
- Bb half-diminished seventh
- B-flat half-diminished 7th
- A-sharp half-diminished 7th
- B-flat half-diminished seventh
- A-sharp half-diminished seventh
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#/Bb half-diminished serves as the ii chord in Ab/G# minor. It's a standard jazz voicing at the 1st fret. Practice moving it to Eb7/D#7 and then to Ab/G#m for the complete minor ii-V-i progression.