Sadly, this talented gent died suddenly shortly before covid as I recall. Quite tragic. They called him "Beard Guy". His name was Mike Taylor, and he was the keyboardist for the Canadian group Walk off the Earth. He was known as the quirky silent guy who would pop up up unexpectedly in videos. (in one case scaring the duet with a clown horn LOL) IT got to the point you would actually sit and watch asking yourself "where is Mike gonna pop up this time?"
Here is the playlist. Let them run. (there are only 4) His version of O Holy Night is my all time favorite rendition. Its VERY powerful, and quite the finale for the list.