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D♭ (musical note)

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{ \new Staff \with{ \magnifyStaff #3/2 } << \time 2/1 \override Score.TimeSignature #'stencil = ##f { \clef bass des1_D-flat \clef treble des' } >> }

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.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of middle D (or D4) is approximately 277.183 Hz.[1] See pitch (music) for a discussion of historical variations in frequency.

Designation by octave[edit]

Scientific designation Helmholtz designation Octave name Frequency (Hz)
D−1 D͵͵͵ or ͵͵͵D or DDDD Subsubcontra 8.662
D0 D͵͵ or ͵͵D or DDD Subcontra 17.324
D1 D͵ or ͵D or DD Contra 34.648
D2 D Great 69.296
D3 d Small 138.591
D4 d One-lined 277.183
D5 d Two-lined 554.365
D6 d Three-lined 1108.731
D7 d Four-lined 2217.461
D8 d Five-lined 4434.922
D9 d Six-lined 8869.844
D10 d Seven-lined 17739.688


Common scales beginning on D[edit]

  • D major: D E F G A B C D
  • D natural minor: D E F G A Bdouble flat C D
  • D harmonic minor: D E F G A Bdouble flat C D
  • D melodic minor ascending: D E F G A B C D
  • D melodic minor descending: D C Bdouble flat A G F E D

Diatonic scales[edit]

  • D Ionian: D E F G A B C D
  • D Dorian: D E F G A B C D
  • D Phrygian: D Edouble flat F G A Bdouble flat 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 Bdouble flat C D
  • D Locrian: D Edouble flat F G Adouble flat Bdouble flat C D

Jazz melodic minor[edit]


  1. ^ Suits, B. H. (1998). "Physics of Music Notes - Scales: Just vs Equal Temperament". MTU.edu. Michigan Technological University. Retrieved 5 February 2024.

See also[edit]