A suspended fourth

Asus4

Also written Asus · A4

NotesA · D · E
Formula1 · 4 · 5
A1D4E5
Root position

The 4th replaces the 3rd and wants to fall back to it: Asus4 → A is one of the oldest cadences there is. The same three notes are Dsus2.

How pianists voice Asus4

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

Open triad Spread

A1E5D4

1 · 5 · 4 — root and 5th below, the 4th an octave up. The same three notes spread over two octaves: the sound of strings rather than a keyboard.

Asus4 inversions

The same 3 notes with a different one in the bass. Each inversion is written as a slash chord.

Root position Asus4

A1D4E5

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

1st inversion Asus4/D

D4E5A1

D (the 4) in the bass: 4 · 5 · 1.

2nd inversion Asus4/E

E5A1D4

E (the 5) in the bass: 5 · 1 · 4.

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