2. “Silent Night” is Christmas song in history according to Times, with over 733 different versions copyrighted since 1978. Legend has it that “Silent Night” was written by a Father Joseph Mohr in Austria, who was determined to have music at his Christmas service after . In reality, a priest wrote it while stationed at a pilgrim church in Austria. Meanwhile, “White Christmas” is the best-selling song of all time. “Santa Claus Is Coming to Town” actually has back-story: songwriter James “Haven” Gillespie was broke, jobless, and his brother had just died when he was asked to write a Christmas song. He was originally to overcome with grief, but eventually found inspiration in his brother’s death and the Christmas memories they had together.