E Suspended 4th Chord

Chord Tones: E Suspended 4th Chord

Symbol: sus4, sus — Formula: 1-4-5

DegreeNoteFrequency (A=440, Equal)
1 E 329.628 Hz
4 A 440.000 Hz
5 B 493.883 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolEsus4
All Common Symbolssus4, sus
Interval Formula1-4-5
Harmonic Categoryopen

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

InversionNotes (low to high)Bass NoteSlash Notation
Root Position E A B E E Suspended 4th Chord
First Inversion A B E A E Suspended 4th Chord/A
Second Inversion B E A B E Suspended 4th Chord/B

Harmonic Function

The E sus4 chord commonly functions as the mediant (iii) in C major or dominant (V) in A major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.

The sus4 chord replaces the third with a perfect fourth, creating tension that traditionally resolves down to the major third. It creates anticipation and is common before dominant chords.

Common Progressions

The E Suspended 4th Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

Songs Featuring the Suspended 4th Chord

Well-known songs where the E Suspended 4th Chord — or this chord type — plays a prominent role:

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

NoteEqual Temp.PythagoreanJust Intonation
E 329.628 Hz 330.001 Hz 327.032 Hz
A 440.000 Hz 440.000 Hz 436.043 Hz
B 493.883 Hz 495.000 Hz 490.548 Hz

Scales Containing the E Suspended 4th Chord

These scales include the E Suspended 4th Chord as a diatonic or characteristic chord: