What is the theme of Auld Lang Syne?

The theme of Auld Lang Syne is friendship, fond memories, and the passage of time. It is a song about cherishing the friendships of the past and remembering the good old days. The lyrics talk about how friends may have moved on and gone their separate ways, but their memories of their time together will always remain. The chorus of the song, "Should auld acquaintance be forgot, and never brought to mind? Should auld acquaintance be forgot, and days of auld lang syne?" emphasizes the importance of keeping in touch with old friends and reminiscing about the good times they shared.