Db Suspended 2nd Chord

Chord Tones: Db Suspended 2nd Chord

Symbol: sus2 — Formula: 1-2-5

DegreeNoteFrequency (A=440, Equal)
1 Db 277.183 Hz
2 Eb 311.127 Hz
5 Ab 415.305 Hz

Chord Notation

Notation TypeSymbol / Value
Lead Sheet SymbolDbsus2
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 Db Eb Ab Db Db Suspended 2nd Chord
First Inversion Eb Ab Db Eb Db Suspended 2nd Chord/Eb
Second Inversion Ab Db Eb Ab Db Suspended 2nd Chord/Ab

Harmonic Function

The Db 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.

Common Progressions

The Db 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 Db 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
Db 277.183 Hz 278.437 Hz 279.067 Hz
Eb 311.127 Hz 309.026 Hz 313.951 Hz
Ab 415.305 Hz 417.657 Hz 418.601 Hz

Scales Containing the Db Suspended 2nd Chord

These scales include the Db Suspended 2nd Chord as a diatonic or characteristic chord: