On a sweltering Sunday evening in August '65, 56,000 people traveled by plane, car, bus, ferry, and subway train to pack NY’s Shea Stadium. They were there not for a ballgame, but a rock and roll concert—the audacious dream of promoter Sid Bernstein. No band had ever played a baseball stadium, and few believed it could be pulled off, but on that glorious night, The Beatles sold out Shea Stadium, shattering all existing box office and attendance records in show business history.