Am7b5 chord (A half-diminished seventh) on piano
Am7b5 (A half-diminished seventh) has four notes: A, C, E flat and G. Its formula is 1, b3, b5, b7. In major keys, Am7b5 is the viiø7 chord in Bb major.
Am7b5 inversions and fingering
A C Eb G · RH 1-2-3-5 · LH 5-3-2-1
C Eb G A · RH 1-2-4-5 · LH 5-3-2-1
Eb G A C · RH 1-2-3-5 · LH 5-3-2-1
G A C Eb · RH 1-2-3-5 · LH 5-4-2-1
A C G · LH 5-3-1
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| Symbol | Am7b5 |
|---|---|
| Also written | Aø, Aø7, Amin7b5, A-7b5 |
| Notes | A C Eb G |
| Formula | 1 b3 b5 b7 |
| Intervals | root, minor third, tritone, minor seventh |
| Type | Half-diminished seventh chord |
Am7b5 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C3 (flat 3), Eb3 (flat 5), G3 (flat 7), A3 (1), C4 (flat 3), Eb4 (flat 5), G4 (flat 7), A4 (1), C5 (flat 3).
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Questions
What notes are in the Am7b5 chord?
Am7b5 (A half-diminished seventh) has four notes: A, C, E flat and G. Its formula is 1, b3, b5, b7. A is the root, C is the minor third, Eb is the tritone and G is the minor seventh.
How do you play Am7b5 on piano?
Play A, C, Eb and G together. Root position: A C Eb G · RH 1-2-3-5 · LH 5-3-2-1.
What key is Am7b5 in?
In major keys, Am7b5 is the viiø7 chord in Bb major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between Am7b5 and Adim7?
Am7b5 and Adim7 share A, C and Eb. Am7b5 has G, the flat 7th, where Adim7 has Gb, the double flat 7th.