Filming: I Should Have Known Better
On March 11th 1964, The Beatles began filming scenes for A Hard Day's Night at Twickenham Film Studios, London. They would later shoot parts of Help! and the Let It Be documentary at this same location. On this day they filmed themselves miming to I Should Have Known Better, a song written by John Lennon.
"That's me. Just a song; it doesn't mean a damn thing." - John Lennon
A Hard Day's Night was released on July 6th, 1964 in the UK and August 11th in the US.