The G♯ Note
G♯ is a black key, immediately next to G. It sounds at 415.3 Hz in octave 4.
G♯ on the piano
Key facts
- On the keyboard
- a black key, immediately next to G.
- Frequency (octave 4)
- 415.3 Hz
- MIDI number (octave 4)
- 68
- Also written as
- A♭
- In key signatures
- The 3 sharp in the order of sharps.
G♯ and its enharmonic spellings
G♯ can also be written as A♭. 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.
G♯ frequency in every octave
Frequencies for G♯ in scientific pitch notation, with A4 tuned to 440 Hz.
| Note | MIDI | Frequency |
|---|---|---|
| G♯1 | 32 | 51.91 Hz |
| G♯2 | 44 | 103.83 Hz |
| G♯3 | 56 | 207.65 Hz |
| G♯4 | 68 | 415.3 Hz |
| G♯5 | 80 | 830.61 Hz |
| G♯6 | 92 | 1661.22 Hz |
| G♯7 | 104 | 3322.44 Hz |
Chords on G♯
The most common chords built with G♯ as the root.
Scales starting on G♯
Keys and scales that use G♯ as their tonic.
All notes
常见问题
Where is G♯ on the piano?
G♯ is a black key, immediately next to G.
What frequency is G♯4?
G♯4 sounds at 415.3 Hz with A4 tuned to 440 Hz.
What is another name for G♯?
G♯ can also be written as A♭. They are the same pitch spelled differently.
