The event, which has been organised to bring awareness to the problems of global warming, has been met with much enthusiasm in London. In only 72 hours, more than 200,000 people registered for an opportunity to own one of the only 60,000 tickets available.
The show will include performances by Madonna, James Blunt, Red Hot Chili Peppers and seventeen other artists.
In addition to London, six other cities will hold simultaneous concerts on July 7.