SolfetoA
A is the white key between the second and third of the three black keys, one of the seven white notes. With A4 tuned to 440 Hz, A4 is 440.00 Hz. A semitone below it is G♯, a semitone above it A♯. In Solfeto it is the 3rd of the twelve pitches to join a learner's set.
A in every octave
Press one to hear it.
- Solfeto plays this octave.
- Solfeto plays this octave.
- The tuning note. Solfeto plays this octave.
- Solfeto plays this octave.
Its names
| With a sharp | A, said "A" |
|---|---|
| With a flat | None: it is a white note |
| Fixed do | la |
| German | A |
| Pitch class | 9, counting C as 0 |
A in Solfeto
A joins 3rd, after C and F♯. Its nearest neighbour already in the set is C, 3 semitones away. The order keeps early pitches far apart, so that each new one is easy to tell from those already learned.
It joins when the set before it is held: right 90 percent of the time, quickly, with no pitch left behind. The method is in how to train absolute pitch.
The notes beside it
Mixing up A with G♯ or A♯ is the most common mistake in naming it. One semitone is the smallest step between two notes, and the one training spends longest on.
Questions
What is the frequency of A4?
A4 is 440.00 Hz, with A4 tuned to 440 Hz. A3 is 220.00 Hz and A5 is 880.00 Hz.
Where is A on a piano?
A is the white key between the second and third of the three black keys.