This piece can be played as a solo or as a duet part for Jingle Bells (level A0, featured in the previous post). It may look a bit complicated, but don’t panic! Just remember that fingers 2 and 3 of each hand are on black keys. The only exception is in bar 7, where the right hand plays D natural.
Here is the sheet music and the video:
Here is the teacher reference sheet for Jingle Bells (level A0) and One-horse Open Sleigh (level A3):