D♭ Suspended 2nd Chord
Chord Tones: D♭ Suspended 2nd Chord
Symbol: sus2 — Formula: 1-2-5
| Degree | Note | Frequency (A=440, Equal) |
|---|---|---|
| 1 | D♭4 | 277.183 Hz |
| 2 | E♭4 | 311.127 Hz |
| 5 | A♭4 | 415.305 Hz |
Chord Notation
| Notation Type | Symbol / Value |
|---|---|
| Lead Sheet Symbol | D♭sus2 |
| All Common Symbols | sus2 |
| Interval Formula | 1-2-5 |
| 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 | D♭4 – E♭4 – A♭4 | D♭ | D♭ Suspended 2nd Chord |
| First Inversion | E♭4 – A♭4 – D♭4 | E♭ | D♭ Suspended 2nd Chord/E♭ |
| Second Inversion | A♭4 – D♭4 – E♭4 | A♭ | D♭ Suspended 2nd Chord/A♭ |
Harmonic Function
The D♭ sus2 chord commonly functions as the supertonic (♭II, Neapolitan) in C major or tonic in D♭ major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.
The sus2 chord replaces the third with a major second, creating an open, ambiguous sound with no major or minor quality. It is widely used in rock and pop for its airy, unresolved character. The D♭ Suspended 2nd Chord specifically contains 3 notes: D♭, E♭, A♭ (formula: 1-2-5). On piano, Db-rooted chords place the root on a black key surrounded by other black keys, and the hand naturally cups over the raised surface for smooth voice leading. Romantic piano repertoire, contemporary R&B, and cinematic underscore frequently feature Db chords for their lush, introspective warmth.
Common Progressions
The D♭ Suspended 2nd Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):
Songs Featuring the Suspended 2nd Chord
Well-known songs where the D♭ Suspended 2nd Chord — or this chord type — plays a prominent role:
- Pinball Wizard – The Who
- She Talks to Angels – Black Crowes
- Waiting for the World to Change – John Mayer
Tuning Frequencies Across Temperaments
Frequencies shown at A=440 Hz. View full temperament data for any note.
| Note | Equal Temp. | Pythagorean | Just Intonation |
|---|---|---|---|
| D♭4 | 277.183 Hz | 278.437 Hz | 279.067 Hz |
| E♭4 | 311.127 Hz | 309.026 Hz | 313.951 Hz |
| A♭4 | 415.305 Hz | 417.657 Hz | 418.601 Hz |
Scales Containing the D♭ Suspended 2nd Chord
These scales include the D♭ Suspended 2nd Chord as a diatonic or characteristic chord: