@Bramia:
They said that they need to play that music score = the melody on the script standing on the piano.
For that you need to be able to do 3 things:
1. Being able to read a music score - everything: tones/notes, connotations and maybe even the speed if the game is going into such detail.
2. Know the piano keys: Which key is which tone.
3. Being able to play the piano correctly cause a piano also has pedals that change the tone of the keys.
So simply "hitting the keys" is not gonna work.
You need to hit them for the WHOLE melody in the correct order with the correct pedal constellation without making an error at any time.
Otherwise you need to start over.
So you do need to be able to play a piano or you can forget about it.