With joyful songs of simplistic sincerity like “I Want to Hold Your Hand,” “Can’t Buy Me Love,” “A Hard Day’s Night,” and “She Loves You,” to more contemplative tracks like “Help!,” “Yesterday,” “Ticket to Ride,” “And I Love Her,” and “If I Fell,” John Lennon, Paul McCartney, George Harrison, and Ringo Starr ignited a cultural and musical phenomenon that the world hadn’t, and likely will never see the likes of again…