E Suspended 4th Chord

Chord Tones: E Suspended 4th Chord

Symbol: sus4, sus — Formula: 1-4-5

DegreeNoteFrequency (A=440, Equal)
1 E4 329.628 Hz
4 A4 440.000 Hz
5 B4 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 E4 A4 B4 E E Suspended 4th Chord
First Inversion A4 B4 E4 A E Suspended 4th Chord/A
Second Inversion B4 E4 A4 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. The E Suspended 4th Chord specifically contains 3 notes: E, A, B (formula: 1-4-5). On guitar, E-rooted chords use both the low and high open E strings, creating a powerful full-register voicing that spans all six strings. Hard rock, metal, and punk lean heavily on E-rooted chords and power chords because the low E string provides maximum sonic impact for distorted tones.

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
E4 329.628 Hz 330.001 Hz 327.032 Hz
A4 440.000 Hz 440.000 Hz 436.043 Hz
B4 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: