The opening chord of The Beatles’ A Hard Day’s Night is one of the most famous chords in history, mostly because of the debate surrounding its actual composition. Many still debate the actual arrangement that led to this “fantastic” sound.

In this video, Randy Bachman (former member of The Guess Who) describes the time he got to visit Abbey Road Studios with George Martin’s son.You have access to all Beatles tapes, and what’s the first thing you want to listen to?

Watch the video and try not to smile after Bachman’s reaction when he actually makes the Beatles sound.