The As Note
As is a black key, immediately next to A. It sounds at 415.3 Hz in octave 4.
As on the piano
Key facts
- On the keyboard
- a black key, immediately next to A.
- Frequency (octave 4)
- 415.3 Hz
- MIDI number (octave 4)
- 68
- Also written as
- Gis
- In key signatures
- The 3 flat in the order of flats.
As and its enharmonic spellings
As can also be written as Gis. These are enharmonic equivalents: the same pitch, the same key on the piano, a different name on the page. Which spelling is correct depends on the key and on how the note functions, not on the sound.
As frequency in every octave
Frequencies for As in scientific pitch notation, with A4 tuned to 440 Hz.
| Note | MIDI | Frequency |
|---|---|---|
| As1 | 32 | 51.91 Hz |
| As2 | 44 | 103.83 Hz |
| As3 | 56 | 207.65 Hz |
| As4 | 68 | 415.3 Hz |
| As5 | 80 | 830.61 Hz |
| As6 | 92 | 1661.22 Hz |
| As7 | 104 | 3322.44 Hz |
Chords on As
The most common chords built with As as the root.
Scales starting on As
Keys and scales that use As as their tonic.
All notes
Ofte stillede spørgsmål
Where is As on the piano?
As is a black key, immediately next to A.
What frequency is As4?
As4 sounds at 415.3 Hz with A4 tuned to 440 Hz.
What is another name for As?
As can also be written as Gis. They are the same pitch spelled differently.
