A♯ (musical note)
A♯1 to A♯6
A♯ (A-sharp; French: la dièse) is the eleventh semitone of the solfège.
This note lies a chromatic semitone above A and a diatonic semitone below B, thus being enharmonic to B♭ (French: si bémol).
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) | MIDI note number |
|---|---|---|---|---|
| A♯−1 | A♯͵͵͵ or ͵͵͵A♯ or AAAA♯ | Subsubcontra | 14.568 | 10 |
| A♯0 | A♯͵͵ or ͵͵A♯ or AAA♯ | Subcontra | 29.135 | 22 |
| A♯1 | A♯͵ or ͵A♯ or AA♯ | Contra | 58.27 | 34 |
| A♯2 | A♯ | Great | 116.541 | 46 |
| A♯3 | a♯ | Small | 233.082 | 58 |
| A♯4 | a♯′ | One-lined | 466.164 | 70 |
| A♯5 | a♯′′ | Two-lined | 932.328 | 82 |
| A♯6 | a♯′′′ | Three-lined | 1864.655 | 94 |
| A♯7 | a♯′′′′ | Four-lined | 3729.31 | 106 |
| A♯8 | a♯′′′′′ | Five-lined | 7458.62 | 118 |
| A♯9 | a♯′′′′′′ | Six-lined | 14917.24 | N/A |
| A♯10 | a♯′′′′′′′ | Seven-lined | 29834.481 | N/A |
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♯
- 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♯
- 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♯
References
- ^ Suits, B. H. (1998). "Physics of Music Notes – Scales: Just vs Equal Temperament". MTU.edu. Michigan Technological University. Retrieved 5 February 2024.