I have no idea about notes or anything piano related. I remember trying some other online game about testing if you are pitch perfect and I was a total failure because I have no idea what any of this is.

But I was still able to get it right in the first row by running the sample lots of times, hitting a key and listening if my combination matches the original music. My point is that I don't think this is for checking pitch perfection if it can be done this way be someone who don't understand a thing about music.