You knew it was coming.
You've probably heard it a dozen times today already. Still, it somehow seems profane not to end the day with Imagine.
If you love rock and roll, as I do, you love John Lennon, too. Even beyond the music, he was one of the best people of the last century. And more than any other song, this one explains what he was about.
Two versions—live and acoustic on top, then the famous video, below.