How to use
- Click or tap any key, or press A S D F G H J K L ; on your computer keyboard.
- Use the arrows next to Octave, or Z and X, to move the keyboard up or down.
- Tick Sustain pedal to let notes ring after you let go.
Options explained
- Computer keyboard
- A S D F G H J K L ; play white keys from C, and W E T Y U O P play the black keys between them — the same layout as most online pianos.
- Sustain pedal
- Notes keep ringing and fade out naturally after you release the key, like holding the right pedal on a real piano.
- Tuning
- Equal temperament with A4 = 440 Hz; middle C is C4 (about 261.63 Hz).
Keyboard map and note frequencies
At the starting position the A key plays middle C (C4). Frequencies use equal temperament with A4 = 440 Hz.
| Note | Computer key | Frequency |
|---|---|---|
| C4 (middle C) | A | 261.63 Hz |
| C♯4 / D♭4 | W | 277.18 Hz |
| D4 | S | 293.66 Hz |
| D♯4 / E♭4 | E | 311.13 Hz |
| E4 | D | 329.63 Hz |
| F4 | F | 349.23 Hz |
| F♯4 / G♭4 | T | 369.99 Hz |
| G4 | G | 392.00 Hz |
| G♯4 / A♭4 | Y | 415.30 Hz |
| A4 | H | 440.00 Hz |
| A♯4 / B♭4 | U | 466.16 Hz |
| B4 | J | 493.88 Hz |
| C5 | K | 523.25 Hz |
Each octave up doubles the frequency, so Z and X move the whole keyboard to half or twice these values.
Easy tunes to try
Twinkle, Twinkle, Little Star: A A G G H H G · F F D D S S A
Ode to Joy: D D F G G F D S A A S D D S S
Happy Birthday: G G H G K J · G G H G L K (L is D5)
On a phone the keyboard shows one octave at a time — use the octave arrows to move up or down.
Frequently asked questions
Why is there no sound?
Browsers only allow sound after you click or tap the page. Click a key once; also check that your device is not muted.
Does it sound like a real piano?
It uses a synthesised piano-like tone with a quick attack and natural decay, so it loads instantly. It is good for practising melodies and finding notes, not for recording.
Can I play chords?
Yes. Press several keys at once — most computer keyboards handle three or four keys together.
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