A little trivia today: In 1968, John Lennon and his wife Cynthia Lennon separated due to John's affair with Yoko Ono. Soon afterwards, Paul McCartney drove out to visit Cynthia and her - and Lennon's - son Julian. "We'd been very good friends for millions of years and I thought it was a bit much for them suddenly to be personae non gratae and out of my life," McCartney said. Cynthia Lennon recalled, "I was truly surprised when, one afternoon, Paul arrived on his own. I was touched by his obvious concern for our welfare.... On the journey down he composed 'Hey Jude' in the car. I will never forget Paul's gesture of care and concern in coming to see us." The song's original title was "Hey Jules," and it was intended to comfort Julian Lennon from the stress of his parents' divorce. McCartney said, "I started with the idea 'Hey Jules,' which was Julian, don't make it bad, take a sad song and make it better. Hey,...