On July 13, 1985, Live Aid, the concert for famine relief was held simultaneously in Philadelphia and London. The concert was organized by Bob Geldof of the Boomtown Rats, and included a veritable who's who of rock and roll royalty, including Bob Dylan, Paul McCartney, Elton John, Madonna, and Queen to name a few. In 2005, to mark the 20th anniversary of Live Aid, Bob Geldof organized Live 8, a series of concerts in various G8 countries. Whereas Live Aid raised funds (supposedly over $70 million) for famine relief, the Live 8 concerts were meant to raise awareness of poverty in lesser developed nations.
Here's Queen, with the brilliant Freddie Mercury, performing at Live Aid in 1985.