More then 1 million people responded to Live 8 organizer Bob Geldof appeal to help "tilt this world a little bit on its side" as he launched a lottery for the star-studded concert.

The public can win a pair of tickets to the concerts, by answering correctly to the question: The forthcoming G8 summit is being held near which city this July? A) Berlin, B) Moscow, C) Edinburgh. "Bob's delighted. I've just told him and he said, 'It's great'," a spokesman said.

The Live 8 event in London will feature stars including Madonna, Robbie Williams and Sir Paul McCartney.