D (musical note)

D is a musical note a whole tone above C, and is known as Re within the fixed-Do solfege system. An enharmonic note is Cdouble sharp, which is a diatonic semitone below D.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of middle D (D4) is approximately 293.665 Hz. See pitch for a discussion of historical variations in frequency.

Designation by octaveEdit

Scientific designation Helmholtz designation Octave name Frequency (Hz)
D−1 D͵͵͵ or ͵͵͵D or DDDD Subsubcontra 9.177
D0 D͵͵ or ͵͵D or DDD Subcontra 18.354
D1 D͵ or ͵D or DD Contra 36.708
D2 D Great 73.416
D3 d Small 146.832
D4 d′ One-lined 293.665
D5 d′′ Two-lined 587.33
D6 d′′′ Three-lined 1174.659
D7 d′′′′ Four-lined 2349.318
D8 d′′′′′ Five-lined 4698.636
D9 d′′′′′′ Six-lined 9397.273
D10 d′′′′′′′ Seven-lined 18794.545

ScalesEdit

Common scales beginning on DEdit

  • D Natural Major: D E F G A B C D (conjugate with Phrygian)
  • D Harmonic Major: D E F G A B C D (conjugate with the keys on G Harmonic minor (start with D))
  • D Melodic Major Ascending: D E F G A B C D (conjugate with Phrygian)
  • D Melodic Major Descending: D C B A G F E D (self-conjugate)
  • D Natural Minor: D E F G A B C D (conjugate with Mixolydian)
  • D Harmonic Minor: D E F G A B C D (conjugate with the keys on G Harmonic Major (start with D))
  • D Melodic Minor Ascending: D E F G A B C D (conjugate with Dorian ♭2)
  • D Melodic Minor Descending: D C B A G F E D (conjugate with Mixolydian)

Diatonic scalesEdit

  • D Ionian: D E F G A B C D (conjugate with Phrygian)
  • D Dorian: D E F G A B C D (self-conjugate)
  • D Phrygian: D E F G A B C D (conjugate with Ionian)
  • D Lydian: D E F G A B C D (conjugate with Locrian)
  • D Mixolydian: D E F G A B C D (conjugate with Aeolian)
  • D Aeolian: D E F G A B C D (conjugate with Mixolydian)
  • D Locrian: D E F G A B C D (conjugate with Lydian)

Jazz melodic minorEdit

  • D Ascending Melodic Minor: D E F G A B C D (conjugate with Dorian ♭2)
  • D Dorian ♭2: D E F G A B C D (conjugate with Ascending Melodic Minor)
  • D Lydian Augmented: D E F G A B C D (conjugate with Altered)
  • D Lydian Dominant: D E F G A B C D (conjugate with Locrian ♮2)
  • D Mixolydian ♭6: D E F G A B C D (self-conjugate)
  • D Locrian ♮2: D E F G A B C D (conjugate with Lydian Dominant)
  • D Altered: D E F G A B C D (conjugate with Lydian Augmented)

We use the note D as the standard note, Dorian mode as the standard mode, and the conjugates are: D self, A-G, E-C, B-F, F#-Bb, C#-Eb, G#-Ab (enharmonic equivalent), ... (the (white or black) keys on the piano are symmetry)

See alsoEdit