Striking a chord with the world

July 13 will mark the 40th anniversary of one of the biggest, most famous and influential concerts in rock history - Live Aid, which was organised by Bob Geldof and Midge Ure to raise funds for the relief of the famine in Ethiopia.

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There had been charity gigs before that but nothing on the sheer scale of Live Aid. As well as taking place in two different venues on opposite sides of the Atlantic (Wembley Stadium in London and John F. Kennedy Stadium in Philadelphia), the event was beamed around the world, and watched by an estimated audience of nearly two billion people in more than 100 countries.