Keyboards
Learn piano with your USB MIDI keyboard
Short answer
Any keyboard with a USB port for a computer and its own speakers works, from 25 to 88 keys. Connect it to a laptop with a USB data cable and open TwoThree in Chrome or Edge. No cable, or on an iPhone? The microphone can listen instead, with some limits.
No account needed. Your practice saves on this device. A free account keeps it safe and on your other devices.
Which keyboards
- A USB port for a computer. The label varies: USB, USB TO HOST or USB COMPUTER. Not a port for a USB stick.
- Its own speakers. The keyboard makes the sound, so controllers without speakers aren’t supported.
- Any size from 25 to 88 keys. Pick the drawing that looks like yours, then press your lowest and highest key so TwoThree knows your range.
The lessons are written for 61 keys. On fewer keys, music is moved by whole octaves to fit, and the lesson says so: “Arranged for your 49 keys.” Nothing is locked.
On a Yamaha PSR-E483? It has its own guide.
Which browsers
| Browser | Keyboard over USB |
|---|---|
| Chrome or Edge on a Windows or Mac laptop | Yes. Allow MIDI devices when asked. |
| Chrome on Android | Yes, through a USB-C or OTG adapter. Not tested on a phone yet. |
| Firefox | Only with a site-permission add-on. Chrome or Edge is simpler. |
| Safari, iPhone and iPad | No MIDI. Use the microphone. |
No cable? Use the microphone
Put your laptop or phone near the keyboard’s speakers. TwoThree listens for one note at a time.
- Timing is judged loosely, and loudness, pedal and note length aren’t checked.
- Chords are checked after you play them, three notes at most.
- Chrome works best. Safari changes the sound before TwoThree hears it.
Start with your first note
Connect your keyboard, or pick the microphone, in the first two minutes. No account needed. Your practice saves on this device. A free account keeps it safe and on your other devices.