Read the note and play its fingering. Each note is graded on your first try; miss it and the answer shows — play it correctly to move on. Reach the threshold to unlock another note.
Play each note as it reaches the line. A correct combo scrolls it past; a miss flashes red until you nail it.
Click a key, then press the new key. Esc cancels.
How long after a key press the valve combination is checked (lets you press a chord not-quite-together).
Share of the random notes that are sharps or flats. 0% = only naturals, 100% = only ♯/♭ notes. Applies to upcoming notes.
Unlock the next note once you're at or above the threshold over the last “window” notes, after at least this many answers. Set the window and min equal for a strict full-window rule.
Fetches the latest version and reloads. Use this if the app looks out of date.