D♭ Suspended 2nd Chord

Chord Tones: D♭ Suspended 2nd Chord

Symbol: sus2 — Formula: 1-2-5

DegreeNoteFrequency (A=440, Equal)
1 D♭4 277.183 Hz
2 E♭4 311.127 Hz
5 A♭4 415.305 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolD♭sus2
All Common Symbolssus2
Interval Formula1-2-5
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 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:

Tuning Frequencies Across Temperaments

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

NoteEqual Temp.PythagoreanJust 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: