Soundtrack from Midnight Castle in Legends of Equestria. Credits go to the LoE audio department: Hirosashii, DreamCloud, Dr. Horse, Asteconn and Dan Ross.
Transcribed using MuseScore, polished with GarageBand, recorded Synthesia and MuseScore playthrough using QuickTime, combined the 2 videos into 1 using Keynote, and spliced in the audio using iMovie.
Vary dynamics according to your liking. If demand is high enough I'll put up the score for download, or I'll upload a version with just the accompaniments, so you can play along on your own piano.

MIDI download: https://www.dropbox.com/s/jz9hxabznc2j6ti/Midnight.mid?dl=0