I am glad our music teacher was chill and did not require much of us, but it does mean that I am completely hopeless at this game. That said, I am sure it is more fun for those actually into classical music.
The current selection system works, but is a touch inefficient, as you need to learn what the keys mean this time before each level. Perhaps that is also meant to be part of the memory challenge? If not, a simple menu would’ve done the job just as well.
Then again, if you want to really lean into the memory angle, you could always assign a unique key for each composer. If any wonderfully-talented musical nerds get that far, they can enjoy juggling the double challenge of guessing and remembering which one of the twelve keys they ought to press!