"I broke down and died." Additional possible clues can be found in the titles of the two sides of the Beatles' last single. "Get Back (to where you once belonged)," John says, while Paul urges.

And, at the end of "I Am the Walrus," a voice asks, "Is he dead, father?" In "Glass Onion," on The Beatles album, is the line, "Well, here's another clue for you all : the walrus was Paul." ...