that was a pretty cool concept. it was really fun to play.
I did find that some of the tunes didn’t match the sequence of notes being played. Being levels 5–8, had lower register notes higher on the keyboard (where an F == higher C#). Other than that, it could be a legit memory game/ beginner piano tool.
Well done on the submission. 10/10 for enjoyment, loved your use of colour for each note.