The song "Happy Xmas (War Is Over)" was written by Yoko Ono and her husband John Lennon, the former Beatle, in 1971. It was released as a single and became an instant holiday classic. The lyrics address the ongoing conflicts in the world and express a desire for peace, hoping that one day war will be over and all people will be able to celebrate a happy Christmas together. The song has become a symbol of hope and a reminder of the need for peace in the world.