A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
A♯ (A-sharp; also called la dièse) is the eleventh semitone of the solfège. In some countries (where B is known as H), it is also called B.
This note lies a chromatic semitone above A and a diatonic semitone below B, thus being enharmonic to si bémol or B♭ (B-flat).
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the A♯ above middle C is approximately 466.164Hz.[1] See pitch (music) for a discussion of historical variations in frequency.
Designation by octave
Scientific designation | Helmholtz designation | Octave name | Frequency (Hz) |
---|---|---|---|
A♯−1 | A♯͵͵͵ or ͵͵͵A♯ or AAAA♯ | Subsubcontra | 14.568 |
A♯0 | A♯͵͵ or ͵͵A♯ or AAA♯ | Subcontra | 29.135 |
A♯1 | A♯͵ or ͵A♯ or AA♯ | Contra | 58.27 |
A♯2 | A♯ | Great | 116.541 |
A♯3 | a♯ | Small | 233.082 |
A♯4 | a♯′ | One-lined | 466.164 |
A♯5 | a♯′′ | Two-lined | 932.328 |
A♯6 | a♯′′′ | Three-lined | 1864.655 |
A♯7 | a♯′′′′ | Four-lined | 3729.31 |
A♯8 | a♯′′′′′ | Five-lined | 7458.62 |
A♯9 | a♯′′′′′′ | Six-lined | 14917.24 |
A♯10 | a♯′′′′′′′ | Seven-lined | 29834.481 |
Scales
Common scales beginning on A♯
- A♯ major: A♯ B♯ C D♯ E♯ F G A♯
- A♯ natural minor: A♯ B♯ C♯ D♯ E♯ F♯ G♯ A♯
- A♯ harmonic minor: A♯ B♯ C♯ D♯ E♯ F♯ G A♯
- A♯ melodic minor ascending: A♯ B♯ C♯ D♯ E♯ F G A♯
- A♯ melodic minor descending: A♯ G♯ F♯ E♯ D♯ C♯ B♯ A♯
Diatonic scales
- A♯ Ionian: A♯ B♯ C D♯ E♯ F G A♯
- A♯ Dorian: A♯ B♯ C♯ D♯ E♯ F G♯ A♯
- A♯ Phrygian: A♯ B C♯ D♯ E♯ F♯ G♯ A♯
- A♯ Lydian: A♯ B♯ C D E♯ F G A♯
- A♯ Mixolydian: A♯ B♯ C D♯ E♯ F G♯ A♯
- A♯ Aeolian: A♯ B♯ C♯ D♯ E♯ F♯ G♯ A♯
- A♯ Locrian: A♯ B C♯ D♯ E F♯ G♯ A♯
Jazz melodic minor
- A♯ ascending melodic minor: A♯ B♯ C♯ D♯ E♯ F G A♯
- A♯ Dorian ♭2: A♯ B C♯ D♯ E♯ F G♯ A♯
- A♯ Lydian augmented: A♯ B♯ C D E F G A♯
- A♯ Lydian dominant: A♯ B♯ C D E♯ F G♯ A♯
- A♯ Mixolydian ♭6: A♯ B♯ C D♯ E♯ F♯ G♯ A♯
- A♯ Locrian ♮2: A♯ B♯ C♯ D♯ E F♯ G♯ A♯
- A♯ altered: A♯ B C♯ D E F♯ G♯ A♯
See also
- B♭ (musical note), an enharmonic note
- Piano key frequencies
- A-sharp major
- A-sharp minor
- Root (chord)
References
- ^ 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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