C suspended fourth

Csus4

Also written Csus · C4

NotesC · F · G
Formula1 · 4 · 5
C1F4G5
Root position

The 4th replaces the 3rd and wants to fall back to it: Csus4 → C is one of the oldest cadences there is. The same three notes are Fsus2.

How pianists voice Csus4

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

Open triad Spread

C1G5F4

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.

Csus4 inversions

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

Root position Csus4

C1F4G5

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

1st inversion Csus4/F

F4G5C1

F (the 4) in the bass: 4 · 5 · 1.

2nd inversion Csus4/G

G5C1F4

G (the 5) in the bass: 5 · 1 · 4.

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