“As the most-covered song in The Beatles’ catalogue, ‘Yesterday’’s origins have been pored over many times. It was written at 57 Wimpole Street, London, where Paul lived in attic rooms at the top of the family home of his girlfriend, the English actress Jane Asher. As Paul has testified many times over, he wrote it in his sleep: “I woke up with a lovely tune in my head. I thought, That’s great, I wonder what that is? There was an upright piano next to me, to the right of the bed by the window. I got out of bed, sat...