A S D F G H J K L ; ' = white keys, W E T Y U O P = black keys,
Z / X (or the ← / → arrow keys) = shift the whole mapping down / up an octave.
Falling notes are colored
blue for left hand,
orange for right hand.
In Practice-wait and Play mode, releasing a key flashes it
green for a well-timed hold,
amber for too short,
red for too long. Pressing a key
that isn't currently due flashes it red
as wrong; in Play mode, a note whose moment passes unplayed also flashes
red as a miss. Play mode is the
real test - notes don't wait for you - and clearing a song there at 90%+ good
(at 1x speed or faster) unlocks the next one.