The conference saw Allied leaders United States President Franklin D. Roosevelt, British Prime Minister Winston Churchill and Soviet Premier Joseph Stalin meet to discuss the government of post-war Europe.

At 11.39am Challenger lifted off, and seventy-three seconds later the Shuttle began to disintegrate following a huge fireball. All seven members of crew were killed, and the disaster led to NASA suspending all Space Shuttle missions for over two and a half years.

The original signatories – United States President Franklin D. Roosevelt, British Prime Minister Winston Churchill, the USSR’s Ambassador to the US Maxim Litvinov, and Chinese Minister of Foreign Affairs T. V. Soong – were joined the next day by a further 24 nations.

Studio engineer Jack Clement, who had discovered Jerry Lee Lewis, was in the control booth and decided to record the session which was the only time that these pop music pioneers would ever record together.