U2, Carey, Williams, Madonna line up for Live 8

The organisers of Live 8 have announced the performers' names in alphabetical order "because so many stars were taking part" it was impossible to choose a headline act.

In London's Hyde Park, those performing include Mariah Carey, Coldplay, Dido, Keane, Sir Elton John, Annie Lennox, Madonna, Muse, the Scissor Sisters, Sir Paul McCartney, Joss Stone, Stereophonics, Sting, Snoop, Robbie Williams, U2 and REM.