O come, O come, Emmanuel – (Piano/Cello) – The Piano Guys
https://www.youtube.com/watch?v=iO7ySn-Swwc
Trans-Siberian Orchestra – Christmas Canon (Official Video)
https://www.youtube.com/watch?v=4cP26ndrmtg&t=0s&index=2&list=PL5o2Uu3rC4m5ONKvTeJSDlCA8b_JomJ8k