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A♭7alt chord

A♭ Altered Dominant

Ab7alt · Root

1Ab33C4b7Gb4b9B𝄫4#9B4b13Fb5
3C4b9#9C5b131b7

Every chord tone stacked from the root up.

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Notes

A♭ – C – G♭ – B𝄫 – B – F♭

Formula

1 – 3 – b7 – b9 – #9 – b13

Practice Note

The altered dominant draws on the altered scale, whose tensions include b9, #9, #11, and b13 over a dominant. This representative formula is 1, 3, b7, b9, #9, b13; pianists often omit the root when a bassist supplies it.

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About Ab7alt

The Ab7alt chord sounds distinctive, with a altered dominant character. Its notes are Ab, C, Gb, Bbb, B, Fb. This chord is commonly heard in jazz.

All Ab chords (61)

Triads

7ths

Extended

Altered