1234 123 GCEA
Beginner

A#m7♭5 Ukulele Chord

A#m7♭5 weaves A#, C#, E and G# together, letting the open E string brighten an otherwise dark half-diminished sound. As the ii in a minor ii-V-i it adds tasteful tension to jazz, and its open string keeps it easy and resonant.

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 four strings, from the top G string (left) to the A string (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

Keep the E string open, press the G and C strings at fret 1 with your index and middle, then add your ring on the A string at fret 1 as well. Arch your fingers so the open E string rings between them — that open note in the middle is what makes the voicing sparkle.

There are many ways to play this chord. Try these:

AECG 1 1 0 1 1 1 0 1
AECG 1 0 1 1 1 0 1 1
AECG 1 0 1 1 1 0 1 1
AECG 1 0 1 1 0 1 1 0

See how A#m7♭5 works with other chords — Progression Generator