Paul’s sessions with John were only possible Tuesdays to Fridays. It was only because Jim wanted Paul to stay away from the troublemaker that he was sagging off school, courting trouble like he’d never done before. They’d go into what McCartneys called the front parlour, a basic standard 1950s front room. John and Paul sat opposite each other by the fireplace. As Paul was left-handed so their guitars went the same way and each had the mirror effect of watching the other’s fingers shape the chords as if his own. Paul would later call these ‘eyeball to eyeball’ sessions, and he was treated to something few witnessed: John put his glasses on. Only rarely they leave his pocket. Almost in each other’s faces, John and Paul quickly gained an usual closeness, little or nothing hidden. Paul noticed John had beautiful hands.
— The Beatles - All These Years - Extended Special Edition: Volume One: Tune In by Mark Lewisohn