Auld Lang Syne' The term HOLIDAY SONG WORD is represented by the crossword solution SYNE, which is a four letter word. Auld Lang Syne is a traditional Scottish song that is often sung at the end of the year or on New Year's Eve. It is a poem written by Robert Burns in 1788 and set to the tune of a traditional folk song. The phrase 'auld lang syne' translates to 'old long since' or 'long long ago'.