Play your piano. The game listens and cheers you on.
The microphone is turned off for this game. That's OK. You can still play by tapping the keys on the screen.
First try: tap "Try again" below. When the iPad asks to use the microphone, tap Allow. If it doesn't ask, close the game and open it again, then tap "Play with my piano".
If it still doesn't ask: open the Settings app, tap Apps, then Safari, then Microphone, and choose Ask or Allow. Then open the game again.
Play middle C on your piano. The big letter shows the note the iPad hears.
Waiting for sound…
Progress is saved on this iPad only. Nothing is sent anywhere.