My grandfather's "Horrification" on the classic "God Rest Ye Merry Gentlemen". This isn't him playing though, this is a piano reader program. I think it's very pretty and of course there's some parts that might be a tad scary. If you'd like the sheet music it's available on Noteflight. Look up JacobBRyan.
Please contact me if you would like to use this in a project. We can discuss the details.