When people think of Christmas music, they often imagine songs filled with warmth, nostalgia, romance, and celebration. Bells ring, choirs sing, and lyrics focus on home, family, and festive cheer. Yet among these seasonal staples stands a song that refuses to simply comfort or distract. “Happy Xmas (War Is Over)” by John Lennon and Yoko Ono is a Christmas song with a conscience — one that blends celebration with confrontation, hope with responsibility, and melody with messag