Are you familiar with the fan composition Nocturne of the Firmaments? I was not, but I'm glad that I was clued in. It's a beautiful piece (in many movements) by Belgerum based on the fan fiction Background Pony. You should check it out if you get the chance. I've embedded the first movement.
In any case, the way I came to hear about the Nocturne was from Ivory Keys, who shared his own piano sheet music for it. If you would like to play the Nocturne yourself, you should definitely check out this sheet music!
Many thanks to Ivory Keys for making this resource!