A (musical note)

musical note

La or A is the sixth note of the solfège. "A" is generally used as a standard for tuning. When the orchestra tunes, the oboe plays an "A" and the rest of the instruments tune to match that pitch. Every string instrument in the orchestra has an A string, from which each player can tune the rest of their instrument.

A0 is the lowest note on the standard piano. The octaves follow A1, A2, etc.. A7 is a few pitches lower than C8, the highest note on the standard piano. The note "A" is not considered to be a certain milestone or mark to hit with voice as, for example, Tenor C is, but it can be extremely demanding in certain octaves.

Designation by octave change

Scientific designationHelmholtz designationOctave nameStandard frequency (Hz)
A9a′′′′′′Six-lined14080
A8a′′′′′Five-lined7040
A7a′′′′Four-lined3520
A6a′′′Three-lined1760
A5a′′Two-lined880
A4a′One-lined440
A3aSmall220
A2AGreat110
A1A͵ or ͵AContra55
A0A͵͵ or ͵͵ASubcontra27.50
A−1A͵͵͵ or ͵͵͵ASubsubcontra13.75

Common scales beginning on A change

  • 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 Dorian: A B C D E F G A

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