>>715933040
>A simplification due to the fact you're playing as something that know how to play guitar so it's made easier.
Doesn't sound consistent at all to me. It is clearly the player who plays in the rock video game, and it's the player who messes around on the piano too (after Kris played the melody properly). Susie even comments on how you suck compared to Kris.

Also I'm not that guy but I don't think it was stated that Dess was a piano prodigy. She probably did play the piano though, and she might have been the one who taught Kris how to play.