E Suspended 4th Chord
Chord Tones: E Suspended 4th Chord
Symbol: sus4, sus — Formula: 1-4-5
| Degree | Note | Frequency (A=440, Equal) |
|---|---|---|
| 1 | E4 | 329.628 Hz |
| 4 | A4 | 440.000 Hz |
| 5 | B4 | 493.883 Hz |
Chord Notation
| Notation Type | Symbol / Value |
|---|---|
| Lead Sheet Symbol | Esus4 |
| All Common Symbols | sus4, sus |
| Interval Formula | 1-4-5 |
| Harmonic Category | open |
Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.
Inversions
| Inversion | Notes (low to high) | Bass Note | Slash 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:
- Scarborough Fair – Simon & Garfunkel
- The Seeker – The Who
- Born on the Bayou – CCR
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just 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: