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A♯ (musical note)

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A (A-sharp), or La Dièse, is the eleventh semitone of the solfege.

Contents

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 466.164 Hz. See pitch (music) for a discussion of historical variations in frequency.

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
  • References

    A♯ (musical note) Wikipedia