A♭ seventh, suspended fourth

A♭7sus4

Also written G♯7sus4 · A♭7sus · A♭sus7

NotesA♭ · D♭ · E♭ · G♭
Formula1 · 4 · 5 · ♭7
A♭1D♭4E♭5G♭♭7
Root position

A dominant that has not decided: the 4th stands in for the 3rd. A♭7sus4 can resolve to A♭7 first — the classic sus-and-release — or go straight to D♭.

How pianists voice A♭7sus4

The same notes, laid out the way hands actually play them.

Open sus Two hands

A♭1G♭♭7D♭4E♭5

1 · ♭7 · 4 · 5 — root and ♭7 in the left hand, 4th and 5th in the right: the sus sound with room between the hands.

A♭7sus4 inversions

The same 4 notes with a different one in the bass. Each inversion is written as a slash chord.

Root position A♭7sus4

A♭1D♭4E♭5G♭♭7

Root at the bottom, stacked in 3rds: 1 · 4 · 5 · ♭7.

1st inversion A♭7sus4/D♭

D♭4E♭5G♭♭7A♭1

D♭ (the 4) in the bass: 4 · 5 · ♭7 · 1.

2nd inversion A♭7sus4/E♭

E♭5G♭♭7A♭1D♭4

E♭ (the 5) in the bass: 5 · ♭7 · 1 · 4.

3rd inversion A♭7sus4/G♭

G♭♭7A♭1D♭4E♭5

G♭ (the ♭7) in the bass: ♭7 · 1 · 4 · 5.

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