Our World was the first live, international, satellite television production, which was broadcast on 25 June 1967. Creative artists, including The Beatles, opera singer Maria Callas, and painter Pablo Picasso - representing nineteen nations - were invited to perform or appear in separate segments featuring their respective countries. The two-and-half-hour event had the largest television audience ever up to that date: an estimated 400 million people around the globe watched the broadcast. Today, it is most famous for the segment from the United Kingdom starring The Beatles. They performed their song "All You Need Is Love" for the first time to close the broadcast.