The song "Happy Christmas (War Is Over)" was written by John Lennon and Yoko Ono. It was released as a single in 1971 and has since become a beloved Christmas classic. The lyrics of the song convey a message of hope and peace during the holiday season. The title "Happy Christmas (War Is Over)" reflects the desire to end conflict and create a more harmonious world. The song's message has resonated with people around the world, making it a timeless and enduring holiday tune.