D♭ (musical note)
D♭ (D-flat) is a musical note lying a diatonic semitone above C and a chromatic semitone below D. It is thus enharmonic to C♯. In the French solfège it is known as re bémol. It is the second semitone of the solfège.
![{ \new Staff \with{ \magnifyStaff #3/2 } << \time 2/1 \override Score.TimeSignature #'stencil = ##f { \clef bass des1_D-flat \clef treble des'_D-flat } >> }](../I/b57722aea5e8362a9864888022a99244.png.webp)
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of middle D♭ (or D♭4) is approximately 277.183 Hz. See pitch (music) for a discussion of historical variations in frequency.
Designation by octave
Scientific designation | Helmholtz designation | Octave name | Frequency (Hz) |
---|---|---|---|
D♭−1 | D♭͵͵͵ or ͵͵͵D♭ or DDDD♭ | Subsubcontra | 8.662 |
D♭0 | D♭͵͵ or ͵͵D♭ or DDD♭ | Subcontra | 17.324 |
D♭1 | D♭͵ or ͵D♭ or DD♭ | Contra | 34.648 |
D♭2 | D♭ | Great | 69.296 |
D♭3 | d♭ | Small | 138.591 |
D♭4 | d♭′ | One-lined | 277.183 |
D♭5 | d♭′′ | Two-lined | 554.365 |
D♭6 | d♭′′′ | Three-lined | 1108.731 |
D♭7 | d♭′′′′ | Four-lined | 2217.461 |
D♭8 | d♭′′′′′ | Five-lined | 4434.922 |
D♭9 | d♭′′′′′′ | Six-lined | 8869.844 |
D♭10 | d♭′′′′′′′ | Seven-lined | 17739.688 |
Scales
Common scales beginning on D♭
- D♭ major: D♭ E♭ F G♭ A♭ B♭ C D♭
- D♭ natural minor: D♭ E♭ F♭ G♭ A♭ B
C♭ D♭
- D♭ harmonic minor: D♭ E♭ F♭ G♭ A♭ B
C D♭
- D♭ melodic minor ascending: D♭ E♭ F♭ G♭ A♭ B♭ C D♭
- D♭ melodic minor descending: D♭ C♭ B
A♭ G♭ F♭ E♭ D♭
Jazz melodic minor
- D♭ ascending melodic minor: D♭ E♭ F♭ G♭ A♭ B♭ C D♭
- D♭ Dorian ♭2: D♭ E
F♭ G♭ A♭ B♭ C♭ D♭
- D♭ Lydian augmented: D♭ E♭ F G A B♭ C D♭
- D♭ Lydian dominant: D♭ E♭ F G A♭ B♭ C♭ D♭
- D♭ Mixolydian ♭6: D♭ E♭ F G♭ A♭ B
C♭ D♭
- D♭ Locrian ♮2: D♭ E♭ F♭ G♭ A
B
C♭ D♭
- D♭ altered: D♭ E
F♭ G
A
B
C♭ D♭
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