Despite being a Kirby soundtrack, this sounds like something you'd hear from Charlie Brown (especially the Christmas movie so I did some editing with the purple stage). Of all the renditions of Butter Building, the one from Epic Yarn sounds like it was meant for the piano with the bass guitars as a nice touch. A joyful tune to brighten your day.
John Legend ft. Ariana Grande - Tale as Old as Time from "Beauty and the Beast" (Trailer Orchestral Version)
To keep it simple, I liked this version better than the one with the backing tracks. This was transcribed only for fun and if someone actually wants to learn it. https://www.youtube.com/watch?v=aXXxl3BFGTg with better soundfonts