Hail Hail, Day of Days is a traditional Christmas carol you may not have heard

Above is one of my favorite Christmas songs, and I never heard it until a couple of years ago, when I was perusing YouTube for traditional Christmas Carols. It's called Hail Hail, Day of Days, and it was performed more than 110 years ago by the Edison Mixed Quartet. 

It's a great song that is never found on today's radio stations or places like MusicPlus on Xfinity. The above link has more Edison Quartet songs.
It is easily available on online music services, including YouTube. 

Enjoy it this Christmas Day.