D"D note"
basicmusictheory.com is a musical note a

whole tone In Western music theory, a major second (sometimes also called whole tone or a whole step) is a second spanning two semitones (). A second is a musical interval encompassing two adjacent staff positions (see Interval number for more det ...

above C, and is known as Re within the fixed-Do solfege system. Its enharmonic equivalents are C (C-double sharp) and E (E-double flat). 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 octave

Scales

Common scales beginning on D

D major D major (or the key of D) is a major scale based on D, consisting of the pitches D, E, F, G, A, B, and C. Its key signature has two sharps. Its relative minor is B minor and its parallel minor is D minor. The D major scale is: : Ch ...

: D E F G A B C D * D

harmonic major In music theory, the harmonic major scale is a musical scale found in some music from the common practice era and now used occasionally, most often in jazz. In George Russell's '' Lydian Chromatic Concept'' it is the fifth mode (V) of the Lydian ...

: D E F G A B C D * D melodic major ascending: D E F G A B C D * D melodic major descending: D C B A G F E D * D natural minor: D E F G A B C D * D

harmonic minor In music theory, the minor scale is three scale patterns – the natural minor scale (or Aeolian mode), the harmonic minor scale, and the melodic minor scale (ascending or descending) – rather than just two as with the major scale, which also ...

: D E F G A B C D * D

melodic minor In music theory, the minor scale is three scale patterns – the natural minor scale (or Aeolian mode), the harmonic minor scale, and the melodic minor scale (ascending or descending) – rather than just two as with the major scale, which al ...

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 Mixolydian mode may refer to one of three things: the name applied to one of the ancient Greek ''harmoniai'' or ''tonoi'', based on a particular octave species or scale; one of the medieval church modes; or a modern musical mode or diatonic scal ...

: 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 In music, the acoustic scale, overtone scale, Lydian dominant scale, Lydian 7 scale, or the Pontikonisian Scale is a Heptatonic scale, seven-note synthetic scale, synthetic Scale (music), scale. : This differs from the major scale in having an ...

: 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

References