I should have know better

"I Should Have Known Better" by The Beatles is a song that was originally recorded in the key of G major. Released in 1964, the song was written by John Lennon and credited to Lennon-McCartney. It appears on their album "A Hard Day's Night" and also featured in the film of the same name. The song gained popularity due to its catchy melody and upbeat rhythm, showcasing the band's trademark sound. A trivia about the song is that it was one of the few Beatles tracks that John Lennon played the harmonica on. Overall, "I Should Have Known Better" reflects the early Beatles sound and remains a beloved song among fans.