🎹 Plug in a MIDI keyboard and play, or click the keys on screen. No cable? Tap 🎤 Mic up top and it listens to a real acoustic piano. Typing keyboard plays too:X C V B N M = C D E F G A, S D G H J = the black keys, U I O P = the next C D E F up.
Top-right: switch to a staff view, show note names on the keys, fullscreen (F). This hint disappears when you play.
