Notes ride the highway toward the keys. Press the letter printed on a note when it reaches the glowing line, on your normal computer keyboard. Hold the key to hold the note.
Two rows, two octaves. The Q row is the upper octave, the Z row the lower one. Number keys and the keys above the home row are the sharps. Arrow up and down shift the whole keyboard an octave.
WATCHThe song plays itself. Follow the notes and the lit keys.
LEARNThe song waits at every note until you press the right key. No clock pressure.
PLAYFull tempo. Timing is scored: Perfect, Good or Miss, with a combo.
Drop any .mid file on the page to learn it. Pick which hand or track is yours from the "Your part" menu; the rest plays automatically.