D♯ (musical note)

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D (D-sharp) or Re Dièse is the fourth semitone of the solfege. It lies a chromatic semitone above D and a diatonic semitone below E, thus being enharmonic to Mi Bémol or E (E flat). However, in some temperaments, it is not the same as E-flat. E-flat is a perfect fifth below B-flat, whereas D sharp is a major third above B.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the D above middle C (or D4) is approximately 311.127 Hz. See pitch (music) for a discussion of historical variations in frequency.

Designation by octave[edit]

Scientific designation Helmholtz designation Bilinear music notation Octave name Frequency (Hz)
D-1 D͵͵͵ or ͵͵͵D or DDDD (-uD) Subsubcontra 9.723
D0 D͵͵ or ͵͵D or DDD (-vD) Subcontra 19.445
D1 D͵ or ͵D or DD (-wD) Contra 38.891
D2 D (-xD) Great 77.782
D3 d (-yD) Small 155.563
D4 d (zD) One-lined 311.127
D5 d′′ (yD) Two-lined 622.254
D6 d′′′ (xD) Three-lined 1244.508
D7 d′′′′ (wD) Four-lined 2489.016
D8 d′′′′′ (vD) Five-lined 4978.032
D9 d′′′′′′ (uD) Six-lined 9956.063
D10 d′′′′′′′ (tD) Seven-lined 19912.127

Common scales beginning on D[edit]

  • D Major: D E Fdouble sharp G A B Cdouble sharp D
  • D Natural Minor: D E F G A B C D
  • D Harmonic Minor: D E F G A B Cdouble sharp D
  • D Melodic Minor Ascending: D E F G A B Cdouble sharp D
  • D Melodic Minor Descending: D C B A G F E D
  • D Dorian: D E F G A B C D

See also[edit]