A♭ (musical note)

A♭ (A-flat; also called la bémol) is the first note of the A♭ major scale. A♭/G♯ is the only note to have only one other enharmonic.

Designation by octave

Scientific designation Helmholtz designation Octave name Frequency (Hz)
A♭−1A♭͵͵͵ or ͵͵͵A♭ or AAAA♭Octocontra12.978
A♭0A♭͵͵ or ͵͵A♭ or AAA♭Subcontra25.957
A♭1A♭͵ or ͵A♭ or AA♭Contra51.913
A♭2A♭Great103.826
A♭3a♭Small207.652
A♭4a♭′One-lined415.305
A♭5a♭′′Two-lined830.609
A♭6a♭′′′Three-lined1661.219
A♭7a♭′′′′Four-lined3322.438
A♭8a♭′′′′′Five-lined6644.875
A♭9a♭′′′′′′Six-lined13289.75
A♭10a♭′′′′′′′Seven-lined26579.501

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♭
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