Coldplay star Martin and Springsteen set to join U2
Chris Martin and Bruce Springsteen are to step in as frontmen for U2 - to replace singer Bono, who has been ordered to rest by doctors after a cycling accident.
The band are to perform at a World Aids Day concert in Times Square, New York, which had been in jeopardy after Bono was injured in a bike accident a fortnight ago.
The new line-up for the group was announced by the band on their website last night just hours ahead of the show with Springsteen and Coldplay's Martin taking turns to perform songs.
U2 said the stand-ins had "graciously donated their time and talents to save the World Aids Day event from cancellation".
Bono had to undergo surgery to correct damage to his arm and he has been told to stop performing until he is fully recuperated.
He said: "This year is a World Aids Day like no other. The world reached a tipping point in the fight against Aids - more people were newly added to life-saving treatment than were newly infected with the virus. A lot of people are calling it the beginning of the end of Aids."