Live Aid Organizer Bob Geldof at Wembley Stadium

On July 13th, 1985, a concert that spanned two continents took place. Called "Live Aid," it was the brainchild of Irish pop singer Bob Geldof, who organized the concert to raise money for the famine in Ethiopia.

Staged in Philadelphia and London, the sixteen-hour concert featured luminaries such as Sting, the Beach Boys, David Bowie, Mick Jagger, Elton John, Paul McCartney and many others.

Of all of the music presented at the festival, two songs were the most significant. "We Are the World," recorded by USA for Africa, and "Do they know it's Christmas, recorded by Band Aid, were written specifically to raise money for the famine. Many of the musicians featured at Live Aid took part in the recording of these two songs.

At last count, Live Aid raised an estimated $100 million to fight hunger in Ethiopia.