La Dièse or A♯ (A sharp) is the eleventh semitone of the solfege. It lies one half of a tone above A and one half of a tone 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♯ semitone is approximately 466.164 Hz. See pitch (music) for a discussion of historical variations in frequency.
|
|
|---|
| C · C♯ · D♭ · D · D♯ · E♭ · E · F · F♯ · G♭ · G · G♯ · A♭ · A · A♯ · B♭ · B |
