Hey, thanks a ton, mate! Lovely of you to say. I'm really happy that CH's soundtrack was able to help you de-stress. :)
The song in question is "Emotional Piano Improvisation" by Alexander Nakarada. You can find the file in "CrimsonHigh/game/audio" or in many places online. :)
(All the other music files I use for CH are in that folder too, of course.)