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.

D Flat Note

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.^[1] See pitch (music) for a discussion of historical variations in frequency.

Designation by octave

Scientific designation	Helmholtz designation	Octave name	Frequency (Hz)	MIDI note number
D♭−1	D♭͵͵͵ or ͵͵͵D♭ or DDDD♭	Subsubcontra	8.662	1
D♭0	D♭͵͵ or ͵͵D♭ or DDD♭	Subcontra	17.324	13
D♭1	D♭͵ or ͵D♭ or DD♭	Contra	34.648	25
D♭2	D♭	Great	69.296	37
D♭3	d♭	Small	138.591	49
D♭4	d♭′	One-lined	277.183	61
D♭5	d♭′′	Two-lined	554.365	73
D♭6	d♭′′′	Three-lined	1108.731	85
D♭7	d♭′′′′	Four-lined	2217.461	97
D♭8	d♭′′′′′	Five-lined	4434.922	109
D♭9	d♭′′′′′′	Six-lined	8869.844	121
D♭10	d♭′′′′′′′	Seven-lined	17739.688	N/A

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♭

Diatonic scales

• D♭ Ionian: D♭ E♭ F G♭ A♭ B♭ C D♭
• D♭ Dorian: D♭ E♭ F♭ G♭ A♭ B♭ C♭ D♭
• D♭ Phrygian: D♭ E F♭ G♭ A♭ B C♭ D♭
• D♭ Lydian: D♭ E♭ F G A♭ B♭ C D♭
• D♭ Mixolydian: D♭ E♭ F G♭ A♭ B♭ C♭ D♭
• D♭ Aeolian: D♭ E♭ F♭ G♭ A♭ B C♭ D♭
• D♭ Locrian: D♭ E F♭ G♭ A B C♭ 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♭