Stars are lining up to take part in a concert calling for global peace.
Singers Corinne Bailey Rae, James Morrison and Annie Lennox have signed up to headline.
Special video messages will be recorded by David Beckham and Jude Law.
Jude said: "I am immensely proud to be a part of this historic project.
"This process is about creating an annual moment of global unity. It can only work if we all become involved and it's essential that we do."
Supporters of the Peace One Day gig include Virgin Atlantic boss Sir Richard Branson and Coldplay frontman, Chris Martin.
The concert will take place on 21st September, on designated Peace Day as established in 2001 by the United Nations, at the Royal Albert Hall.
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