A♭ suspended second
A♭sus2
Also written G♯sus2 · A♭2 (in some charts)
No 3rd: the 2nd takes its place, so A♭sus2 is neither major nor minor. Its three notes are also E♭sus4 — which one you hear depends on the bass.
How pianists voice A♭sus2
The same notes, laid out the way hands actually play them.
Open triad Spread
1 · 5 · 2 — root and 5th below, the 2nd an octave up. The same three notes spread over two octaves: the sound of strings rather than a keyboard.
A♭sus2 inversions
The same 3 notes with a different one in the bass. Each inversion is written as a slash chord.
Root position A♭sus2
Root at the bottom, stacked in 3rds: 1 · 2 · 5.
1st inversion A♭sus2/B♭
B♭ (the 2) in the bass: 2 · 5 · 1.
2nd inversion A♭sus2/E♭
E♭ (the 5) in the bass: 5 · 1 · 2.
Suspended second chords in every key
Every A♭ chord
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