No one asked me about this but I just feel like saying it anyway
A time ago someone sayd that the forgotten man[gaster?] might have been kris's therapist or smth but I never really thought much about it, at least until chapter 5
So y'know when kris is playing the piano? It's different from the normal ost's because it feels like someone is actually playing the piano, the little delays it would take for the hand to reach across the keyboard, the sometimes off tempo and whatever
In chapter 4, inside noelle's house and inside the second dark world are the only times we hear something like that, when kris is playing
But then on chapter 5, in the egg room, it gave me the same feeling like when kris played you know? It just sounded like someone was actually playing the piano, but this time it was professional, this person's hands could easily reach across the keyboard, they had experience, they were probably an adult
And there is also the fact that, so far, we have seen only three pianos in the real world, in noelle's house, at the church and inside the hospital, and I just assumed that the therapist would work at the hospital since we have already interacted with all of the other buildings
Where would kris learn how to play piano? Who taught them? Was it the man behind the tree? When people say the man who speaks with hands maybe they mean the man who communicates through piano notes or smth I mean music has always had great meaning in both undertale and deltarune