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Am7♭5 chord

A Half-Diminished 7th

Am7b5 · Root

1A3b3C4b5Eb4b7G4
1b3C4b7C5b5

Every chord tone stacked from the root up.

Click keys to experiment with the chord

Notes

A – C – E♭ – G

Formula

1 – b3 – b5 – b7

Practice Note

The half-diminished chord is the usual iiø7 in a minor-key ii–V–i, commonly paired with Locrian or Locrian natural 2. Its b5 and b7 lead into the dominant; the root may be omitted in a piano voicing when supplied by bass.

Try next

Am7 · SiblingAdim7 · SiblingD7b9 · Next in ii–VGm · ii–V–i targetCm6 · Same notesF9 · Same notes (rootless)

About Am7b5

The Am7b5 chord sounds dark and ambiguous, the classic jazz ii chord in minor keys. Its notes are A, C, Eb, G. This chord is commonly heard in jazz.

Jazz
All A chords (61)

Triads

A — MajorAm — MinorAdim — DiminishedAaug — AugmentedAsus2 — Suspended 2ndAsus4 — Suspended 4thA5 — Power Chord

7ths

A7 — Dominant 7thAmaj7 — Major 7thAm7 — Minor 7thAm7#5 — Minor 7th Sharp 5Adim7 — Diminished 7thA6 — Major 6thAm6 — Minor 6thA7sus4 — Dominant 7th Sus4A7sus2 — Dominant 7th Sus2

Extended

A9 — Dominant 9thAmaj9 — Major 9thAm9 — Minor 9thAadd9 — Add 9Aadd11 — Add 11Aadd2 — Add 2Aadd#11 — Add Sharp 11A11 — Dominant 11thA13 — Dominant 13thA6/9 — 6/9Amaj13 — Major 13thAm(add2) — Minor Add 2Am(add9) — Minor Add 9Am(add11) — Minor Add 11AmMaj7 — Minor Major 7thAm11 — Minor 11thAm13 — Minor 13thAm6/9 — Minor 6/9A7#11 — Dominant 7th Sharp 11A9#11 — Dominant 9th Sharp 11A13#11 — Dominant 13th Sharp 11A9sus4 — Dominant 9th Sus4A13sus4 — Dominant 13th Sus4Amaj7#11 — Major 7th Sharp 11Amaj9#11 — Major 9th Sharp 11AmMaj9 — Minor Major 9thAm9b5 — Half-Diminished 9th

Altered

A7#9 — Dominant 7th Sharp 9A7b9#9 — Dominant 7th Flat 9 Sharp 9A13#9 — Dominant 13th Sharp 9A7b9 — Dominant 7th Flat 9A7#5 — Dominant 7th Sharp 5A7b5 — Dominant 7th Flat 5A7alt — Altered DominantA7#9#5 — Dominant 7th #9 #5A7b9b5 — Dominant 7th b9 b5A7#9b5 — Dominant 7th #9 b5A7sus4b9 — Dominant 7th Sus4 Flat 9A9#5 — Dominant 9th Sharp 5A9b5 — Dominant 9th Flat 5A13b9 — Dominant 13th Flat 9A7b13 — Dominant 7th Flat 13Aaug7 — Augmented 7thAdim(maj7) — Diminished Major 7thAaugMaj7 — Augmented Major 7th