1. Learn it. A new shortcut arrives glowing. The track holds and the music drops low. You read what it does, see the keys and a memory hook, and press it once. The beat drops back in.
2. Recall it. A few notes later it comes back with only the task, like "Keep the header row visible". Press the keys as the note crosses the line.
3. Feedback. Right on the line is a Perfect. A miss shows you the answer and brings it back 3 notes later. Anything you nail comes back tomorrow, then in 3 days, then a week, until it's yours.
4. Level up. Each level teaches 5 new shortcuts and mixes in a few from earlier levels. Get the new ones right and the next level opens. Go as far as you want in one sitting.

The four lanes tell you the first key

Alt sequences

Shortcuts like Alt W F F are pressed one after another, the way Excel's ribbon works: tap Alt, let go, then the letters. Holding Alt through the letters works too.