D (musical note)

"Re (musical note)" redirects here. For its use in movable-do system, see Solfège.

Also known as Re

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D[1] is a musical note a whole tone 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). It is the third 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 (D4) is approximately 293.665Hz.[2] See pitch for a discussion of historical variations in frequency.

## Designation by octave[edit]

Scientific designation  | Helmholtz designation  | Octave name  | Frequency (Hz)

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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

## Scales[edit]

### Common scales beginning on D[edit]

* D major: D E F♯ G A B C♯ D
* D harmonic major: 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: 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[edit]

* 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[edit]

* 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

## See also[edit]

* Piano key frequencies
* D major
* D minor
* Root (chord)

## References[edit]

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

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Notes of the chromatic scale

* B♯ / C
* C♯ / D♭
* D
* D♯ /  E♭
* E / F♭
* E♯ / F
* F♯ / G♭
* G
* G♯ / A♭
* A
* A♯ / B♭
* B / C♭

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