From Nature:
Al Gore is continuing his crusade to tackle climate change by hosting a 24-hour, seven-continent mega-concert. On 7 July, starting from 02:10 London time, bands will belt out songs from (in order) Sydney, Tokyo, Shanghai, Hamburg, London, Johannesburg, New York, Rio de Janeiro and, although this bit won’t be live for logistical reasons, the Antarctic. Some other venues are also hosting shows, including Kyoto — home of the agreement to try to reduce greenhouse-gas emissions.
What’s the point?
To raise awareness about climate change, and what can be done about it. The music itself might have little to do with that, but political speeches will probably be interspersed with performance, and the vast media coverage contain some weightier discussions of the issue.
More here.