A Half-Diminished (Am7b5) Chord Guitar

A compact half-diminished — the ii of G minor.

A half-diminished seventh (1-♭3-♭5-♭7) in a compact shape.
The ii chord of G minor, resolving through D7 to Gm.
Its hollow, leaning quality comes from the flat fifth.
More sophisticated than a plain minor 7th in minor keys.

Root3rd5th7th

Not played

E6th string

FretMuted

Finger—

Root

ABass5th string

FretOpen

Finger—

5th

D4th string

Fret1

Finger2 middle

7th

G3rd string

FretOpen

Finger—

3rd

B2nd string

Fret1

Finger1 index

7th

e1st string

Fret3

Finger4 pinky

NotesA – D# – G – C

Formula1 – ♭3 – ♭5 – ♭7

Voicingx01013

TonesA×1·C×1·D#×1·G×2

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Questions about A Half-Diminished (Am7b5)

What notes are in a A Half-Diminished (Am7b5) chord?

A A Half-Diminished (Am7b5) chord contains the notes A, D#, G, C. It is built from the half-diminished formula 1 - ♭3 - ♭5 - ♭7, with A as the root.

Is Am7b5 the same as C minor 6?

They share the same four notes (A-C-E♭-G), so they're enharmonic inversions of each other — Am7b5 is a Cm6 with A in the bass. Which name you use depends on function: call it Am7b5 when A is the root and it's acting as a ii chord, and Cm6 when C is the root.

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A Half-Diminished (Am7b5) Chord Guitar

This chord sounds even better than it looks.

Questions about A Half-Diminished (Am7b5)

What notes are in a A Half-Diminished (Am7b5) chord?

Is Am7b5 the same as C minor 6?

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