Silent night, Holy night
This appears on Christmas with You.
The origin of the Christmas carol we know as Silent Night was a poem that was written in 1816 by an Austrian priest called Joseph Mohr. On Christmas Eve in 1818 in the small alpine village called Oberndorf it is reputed that the organ at St. Nicholas Church had broken. Joseph Mohr gave the poem of Silent Night (Stille Nacht) to his friend Franz Xavier Gruber and the melody for Silent Night was composed with this in mind. The music to Silent Night was therefore intended for a guitar and the simple score was finished in time for Midnight Mass. Silent Night is the most famous Christmas carol of all time!.
source - http://www.carols.org.uk