This is a summary of "All you need is love", a Lennon-McCartney song that hit # 1 all over the world back in August 1967:
"It was first performed by The Beatles on Our World, the first live global television link. Broadcast to 26 countries and watched by 400 million, the programme was broadcast via satellite on June 25, 1967.
The BBC had commissioned the Beatles to write a song for the UK's contribution.
Rolling Stone magazine ranked it at #362 in their 500 greatest songs of all time."