All you need is love - The Beatles

The Beatles played this "Our World", the first worldwide TV special. Broadcast in 24 countries on June 25, 1967. The Beatles were supposedly recording this live during the show, but they used a backing track and John Lennon's vocal was redone a few hours later. Eric Clapton mimed guitar on this during the special. The concept of the song was born out of a request to bring a song that was going to be understood by people of all nations. 

The writing began in late May of 1967, with John and Paul working on separate songs. It was decided that John's "All You Need Is Love" was the better choice because of its easy to understand message of love and peace. The song was easy to play, the words easy to remember and it encompassed the feeling of the world's youth during that period. "All You Need Is Love" was a popular saying in the '60s anti-war movement. The song was released in the middle of the Summer of Love (1967). It was a big part of the vibe.

All you need is love - The Beatles 
Love, love, love, love, love, love, love, love, love. 
There's nothing you can do that can't be done. 
Nothing you can sing that can't be sung. 
Nothing you can say but you can learn how to play the game It's easy. 
There's nothing you can make that can't be made. 
No one you can save that can't be saved. 
Nothing you can do but you can learn how to be you in time - It's easy. 
All you need is love, all you need is love, 
All you need is love, love, love is all you need. 
Love, love, love, love, love, love, love, love, love. 
All you need is love, all you need is love, 
All you need is love, love, love is all you need. 
There's nothing you can know that isn't known. 
Nothing you can see that isn't shown. 
Nowhere you can be that isn't where you're meant to be. 
It's easy. All you need is love, all you need is love, 
All you need is love, love, love is all you need. 
All you need is love (all together now) 
All you need is love (everybody) 
All you need is love, love, love is all you need.